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Transcript of Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell,...
![Page 1: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/1.jpg)
Threads, Fasteners, and Springs
Chapter 11
![Page 2: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/2.jpg)
2Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Objectives
• Define and label the parts of a screw thread
• Identify various screw thread forms• Draw detailed, schematic, and
simplified threads• Define typical thread specifications
![Page 3: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/3.jpg)
3Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Objectives (cont.)
• Identify various fasteners and describe their use
• Draw various screw head types• Draw springs
![Page 4: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/4.jpg)
4Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Understanding Threads and Fasteners• There are three basic applications
for screw threads:• To hold parts together• To provide for adjustment between
parts• To transmit power
![Page 5: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/5.jpg)
5Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Screw Thread Terms
![Page 6: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/6.jpg)
6Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Screw Thread Terms
• Screw thread – a ridge of uniform section in the form of a helix on the external or internal surface of a cylinder
• External thread – a thread on the outside of a member
• Internal thread – a thread on the inside of a member
![Page 7: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/7.jpg)
7Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Screw Thread Terms
• Major diameter – the largest diameter of a screw thread
• Minor diameter – the smallest diameter of a screw thread
![Page 8: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/8.jpg)
8Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Screw Thread Terms
• Pitch – the distance from a point on a screw thread to a corresponding point on the next thread measured parallel to the axis• Pitch (P) equals 1 divided by the
number of threads per inch
![Page 9: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/9.jpg)
9Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Screw Thread Terms
• Pitch diameter – the diameter of an imaginary cylinder passing through threads where the widths of the threads and the widths of the spaces would be equal
• Lead – the distance a screw thread advances axially in one turn
![Page 10: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/10.jpg)
10Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Screw Thread Terms
• Angle of thread – the angle between the sides of the thread measured in a plane through the axis of the screw
• Crest – the top surface joining the two sides of a thread
• Root – the bottom surface joining the sides of two adjacent threads
![Page 11: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/11.jpg)
11Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Screw Thread Terms
• Side – the surface of the thread that connects the crest with the root
• Axis of screw – the longitudinal centerline through the screw
• Depth of thread – the distance between the crest and the root of the thread measured normal to the axis
![Page 12: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/12.jpg)
12Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Screw Thread Terms
• Form of thread – the cross section of thread cut by a plane containing the axis
• Series of thread – standard number of threads per inch for various diameters
![Page 13: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/13.jpg)
13Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Screw Thread Forms
• Typical thread forms include:• Sharp-V thread (60 degrees)• American national thread• Unified thread• Unified extra fine thread series• Metric thread• Square thread• Acme thread
![Page 14: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/14.jpg)
14Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Screw Thread Forms
• Typical thread forms (cont.)• Standard worm thread • Whitworth thread• Knuckle thread• Buttress thread
![Page 15: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/15.jpg)
15Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Screw Thread Forms
![Page 16: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/16.jpg)
16Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Thread Pitch
![Page 17: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/17.jpg)
17Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Right-hand and Left-hand Threads
![Page 18: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/18.jpg)
18Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Single and Multiple Threads• Single threads are composed of
one ridge and the lead is equal to the pitch
• Multiple threads are composed of two or more ridges running side by side
![Page 19: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/19.jpg)
19Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Single and Multiple Threads
![Page 20: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/20.jpg)
20Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Thread Fits
• ANSI has established 3 classes of fit:• Class 1 – when clearance between
mating parts is essential• Class 2 – high quality for the bulk of
interchangeable screw thread work• Class 3 – exceptionally high quality
recommended only when high cost of precision is warranted
![Page 21: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/21.jpg)
21Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Thread Fits
• Some specialized metric thread applications are specified by:• Tolerance grade• Tolerance positions• Class• Length of engagement
![Page 22: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/22.jpg)
22Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Methods for Drawing Thread• There are three methods of
representing screw threads on drawings:• Schematic• Simplified• Detailed
![Page 23: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/23.jpg)
23Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Methods for Drawing Thread
![Page 24: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/24.jpg)
24Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Methods for Drawing Thread
![Page 25: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/25.jpg)
25Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Methods for Drawing Thread
![Page 26: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/26.jpg)
26Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Thread Notes
• ASME/ANSI Y 14.6-2001 “Screw Thread Representations” is a standard for representing, specifying, and dimensioning screw threads on drawings• These same notes or symbols are
used in correspondence, in records, and in specifications for parts, taps, dies, tools, and gages
![Page 27: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/27.jpg)
27Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Thread Notes
![Page 28: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/28.jpg)
28Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Thread Notes
![Page 29: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/29.jpg)
29Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
External Thread Symbols
![Page 30: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/30.jpg)
30Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Internal Thread Symbols
![Page 31: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/31.jpg)
31Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Detailed Representation
![Page 32: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/32.jpg)
32Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Detailed Representation
![Page 33: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/33.jpg)
33Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Use of Phantom Lines
![Page 34: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/34.jpg)
34Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Threads in Assembly
![Page 35: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/35.jpg)
35Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Pipe Thread Representation
![Page 36: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/36.jpg)
36Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Bolts, Studs, and Screws
![Page 37: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/37.jpg)
37Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Types of Screw Heads
![Page 38: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/38.jpg)
38Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Tapped Holes
• The bottom of a drilled hole formed by the point of a twist drill is cone shaped
• The thread length is the length of full or perfect threads• The tap drill depth does not include
the cone point of the drill
![Page 39: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/39.jpg)
39Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Tapped Holes
![Page 40: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/40.jpg)
40Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Standard Bolts and Nuts
• Standard bolts and nuts have characteristics determined by:• Bolt types• Finish• Proportions• Threads• Thread lengths • Bolt lengths
![Page 41: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/41.jpg)
41Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Specifications
• In specifying bolts, the following information must be covered in order:• Nominal size of bolt body• Thread specification or thread note• Length of bolt• Finish of bolt• Style of head• Name
![Page 42: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/42.jpg)
42Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Locknuts and Locking Devices
![Page 43: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/43.jpg)
43Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Standard Cap Screws
![Page 44: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/44.jpg)
44Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Standard Machine Screws
![Page 45: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/45.jpg)
45Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Standard Set Screws
![Page 46: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/46.jpg)
46Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Standard Wood Screws
![Page 47: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/47.jpg)
47Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Miscellaneous Fasteners
![Page 48: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/48.jpg)
48Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Keys
• Keys are used to prevent movement between shafts and wheels, couplings, cranks, and similar machine parts attached to or supported by shafts
![Page 49: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/49.jpg)
49Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
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Keys
![Page 50: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/50.jpg)
50Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Machine Pins
• Machine pins include taper pins, straight pins, dowel pins, clevis pins, and cotter pins
![Page 51: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/51.jpg)
51Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
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Rivets
• Rivets are permanent fasteners used to hold sheet metal or rolled steel together
![Page 52: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/52.jpg)
52Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Springs
• A spring is a mechanical device designed to store energy when deflected and to return the equivalent amount of energy when released
• Springs are classified as:• Helical springs• Flat springs
![Page 53: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/53.jpg)
53Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
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Helical Springs
• Helical springs have three types:• Compression springs• Extension springs• Torsion springs
![Page 54: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/54.jpg)
54Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Helical Springs
![Page 55: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/55.jpg)
55Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
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Compression Springs
![Page 56: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/56.jpg)
56Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
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Extension Springs
![Page 57: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/57.jpg)
57Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
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Torsion Springs
![Page 58: Threads, Fasteners, and Springs Chapter 11. 2 Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson.](https://reader031.fdocuments.in/reader031/viewer/2022032204/56649e375503460f94b27b5c/html5/thumbnails/58.jpg)
58Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Flat Springs