Self-Tapping Screws Thread Forming Type-BSelf-Tapping Screws Thread Forming Type-B D d S L P THREADS...

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Self-Tapping Screws Thread Forming Type-B D d S L P THREADS FOR S ELF-TAPPING S CREWS TYPE-B ANSI B18.6.4 Nominal Size or Basic Screw Diameter Threads Per Inch D d P S L Minimum Torsional Strength, lb.- in. (STEEL SCREWS ONLY) Major Diameter Minor Diameter Point Diameter Point Taper Length Minimum Practical Screw Length Max Min Max Min Max Min Max Min 90° Heads Csk Heads 2 .0860 32 .088 .082 .064 .060 .058 .054 .062 .047 5/32 3/16 4 3 .0990 28 .101 .095 .075 .071 .068 .064 .071 .054 3/16 7/32 9 4 .1120 24 .114 .108 .086 .082 .079 .074 .083 .063 3/16 1/4 13 5 .1250 20 .130 .123 .094 .090 .087 .082 .100 .075 7/32 9/32 18 6 .1380 20 .139 .132 .104 .099 .095 .089 .100 .075 1/4 9/32 24 7 .1510 19 .154 .147 .115 .109 .105 .099 .105 .079 1/4 5/16 30 8 .1640 18 .166 .159 .122 .116 .112 .106 .111 .083 9/32 11/32 39 10 .1900 16 .189 .182 .141 .135 .130 .123 .125 .094 5/16 3/8 56 12 .2160 14 .215 .208 .164 .157 .152 .145 .143 .107 11/32 7/16 88 1/4 .2500 14 .246 .237 .192 .185 .179 .171 .143 .107 3/8 1/2 142 5/16 .3125 12 .315 .306 .244 .236 .230 .222 .167 .125 15/32 19/32 290 3/8 .3750 12 .380 .371 .309 .299 .293 .285 .167 .125 17/32 11/16 590 Tolerance on Length Up to 3/4 in., Incl.: -0.03 Over 3/4 to 1-1/2 in., Incl.: -0.05 Over 1-1/2 in.: -0.06 Description A thread forming tapping screw with spaced threads and a blunt point with incomplete entering threads. Applications/ Advantages For molded or through holes in thin metal, non-ferrous castings, plastics or resin-filled plywood. Material Steel: AISI 1016 - 1024 or equivalent steel. Stainless: 18-8 Stainless steel Heat Treatment (steel only) Screws shall be quenched in liquid and then tempered by reheating to 650°F minimum. Surface Hardness Steel: Rockwell C45 minimum Case Depth (steel only) No. 4 thru 6 diameter: .002 - .007 No. 8 thru 12 diameter: .004 - .009 1/4" and larger: .005 - .011 Core Hardness (after tempering) Steel: Rockwell C28 - 38 Plating See Appendix-A for plating information.

Transcript of Self-Tapping Screws Thread Forming Type-BSelf-Tapping Screws Thread Forming Type-B D d S L P THREADS...

Page 1: Self-Tapping Screws Thread Forming Type-BSelf-Tapping Screws Thread Forming Type-B D d S L P THREADS FORSELF-TAPPINGSCREWSTYPE-B ANSI B18.6.4 Nominal Size or Basic Screw Diameter Threads

Self-Tapping Screws Thread Forming Type-B

D d

S

L

P

THREADS FOR SELF-TAPPING SCREWS TYPE-B ANSI B18.6.4

Nominal Sizeor Basic Screw

Diameter

ThreadsPer Inch

D d P S L MinimumTorsionalStrength,

lb.- in.(STEEL

SCREWSONLY)

Major Diameter Minor Diameter Point DiameterPoint Taper

Length

MinimumPractical Screw

Length

Max Min Max Min Max Min Max Min 90°Heads

CskHeads

2 .0860 32 .088 .082 .064 .060 .058 .054 .062 .047 5/32 3/16 4

3 .0990 28 .101 .095 .075 .071 .068 .064 .071 .054 3/16 7/32 9

4 .1120 24 .114 .108 .086 .082 .079 .074 .083 .063 3/16 1/4 13

5 .1250 20 .130 .123 .094 .090 .087 .082 .100 .075 7/32 9/32 18

6 .1380 20 .139 .132 .104 .099 .095 .089 .100 .075 1/4 9/32 24

7 .1510 19 .154 .147 .115 .109 .105 .099 .105 .079 1/4 5/16 30

8 .1640 18 .166 .159 .122 .116 .112 .106 .111 .083 9/32 11/32 39

10 .1900 16 .189 .182 .141 .135 .130 .123 .125 .094 5/16 3/8 56

12 .2160 14 .215 .208 .164 .157 .152 .145 .143 .107 11/32 7/16 88

1/4 .2500 14 .246 .237 .192 .185 .179 .171 .143 .107 3/8 1/2 142

5/16 .3125 12 .315 .306 .244 .236 .230 .222 .167 .125 15/32 19/32 290

3/8 .3750 12 .380 .371 .309 .299 .293 .285 .167 .125 17/32 11/16 590

Tolerance on Length Up to 3/4 in., Incl.: -0.03 Over 3/4 to 1-1/2 in., Incl.: -0.05 Over 1-1/2 in.: -0.06

Description A thread forming tapping screw with spaced threads and a blunt point with incomplete entering threads.

Applications/Advantages

For molded or through holes in thin metal, non-ferrous castings, plastics or resin-filled plywood.

Material Steel: AISI 1016 - 1024 or equivalent steel.Stainless: 18-8 Stainless steel

Heat Treatment(steel only) Screws shall be quenched in liquid and then tempered by reheating to 650°F minimum.

Surface Hardness Steel: Rockwell C45 minimum

Case Depth(steel only)

No. 4 thru 6 diameter: .002 - .007No. 8 thru 12 diameter: .004 - .009

1/4" and larger: .005 - .011

Core Hardness(after tempering)

Steel: Rockwell C28 - 38

Plating See Appendix-A for plating information.

PRODUCTION TAPPING SOLUTIONS€¦ · TAPPING SOLUTIONS Foolproof results developed over five generations. CUTTING TOOLS. 1901 1910 1934 1949 1954 1955 1965 1967 ... INTERNAL THREADS

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Less Invasive Stabilization System(LISS) TGsynthes.vo.llnwd.net/o16/Mobile/Synthes North... · Biomechanics of unicortical, locked screws ... Locking screws perform drilling, tapping

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Self Tapping IMF Screws Technique

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DIN 7982 - 1984 : Cross Recessed Countersunk Head Tapping Screws.

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624 ˆ - WordPress.com · 2018-07-03 · 625 17.2 Types of Screw Threads used for Power Screws Following are the three types of screw threads mostly used for power screws : 1. Square

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Self-tapping screws and threaded rods as reinforcement for … · 2017. 6. 28. · 1 Self-tapping screws and threaded rods as reinforcement for structural timber elements – a state-of-the-art

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Self Tapping Screws

Self Tapping Screws

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