FREDSERT - Next Generation Threaded Insert Technology - Catalog

Next Generation Threaded Insert Technology

FREDSERTTHREADED INSERTS

www.fredsert.comProduct Catalog Revision M

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Introduction

Fredsert threaded inserts, patented by the General Dynam-ics Corporation, have fostered new attachment concepts, improved flexibility in assembly operations, and reduced overall integration costs. Logistical support costs have also been reduced, since removal and replacement of inserts in the field is drastically simplified.

The Fredsert geometry delivers a combination of fric-tion fit and material compression to reliably lock in place, resisting vibration, tensile loading, and shear loading in the most demanding heavy-duty applications.

One of the most unique features of a Fredsert is that it doesnt permanently lock into place. Instead, its patented geometry enables it to break away at 80% of the rec-ommended installation torque, allowing quick and easy removal and replacement with the same equipment. By

comparison, competitors inserts can only be removed by drilling them out and, in some cases, re-tapping to a larger thread size. This becomes difficult if the insert is installed in a large structure or a tight enclosure, because access and rigidity are limited.

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For low to medium-volume applications, Fredserts are installed manually with a torque wrench, or semi-automated with an electric nutrunner. For production volumes, however, Fredsert installation can be fully-automated using either a CNC machine or a robot to apply torque. This unique capability provides signif-icant advantage over traditional inserts, which are difficult or impossible to fully automate due to the mechanical-clamping aspect of their installation.

Another characteristic that sets the Fredsert product line apart is the fact that Titanium Fredserts are available as a standard product, in addition to those made from Stainless Steel and Zinc-plated Steel. Titanium Fredserts deliver weight savings of 40% over steel inserts of the same size. Titanium inserts from other lead-ing insert manufacturers are typically not an option, or they feature an extremely high price and long lead time.

Another key benefit that differentiates Fred-serts from the competition is that they create a watertight seal without the use of a thread-locking agent, such as Loctite. The combina-tion of a tapered thread profile, 100% thread engagement, and a flanged head deliver a per-fect seal on the external thread of the insert. Blind Fredserts also provide a watertight seal on the internal thread, because the thread bore doesnt break through the bottom of the insert.

Fredserts are designed and built in the USA. This product line is certified to MIL-I-45914A and is manufactured in a state-of-the-art, ISO 9001:2000 accredited facility.

For more information, please visit www.fred-sert.com

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The multiple Fredsert styles and self-sealing feature provide a broad range of options for our designers, com-pared to other inserts on the market

Fredserts are designed for the most demanding heavy-duty applications, making them perfect for use in the defense, heavy-equipment, automotive, and marine industries

One of the things that really sets Fredserts apart is theyre easy to remove and replace if we shear off a bolt inside them. Other inserts Ive used need to be drilled-out if this happens

Weight reduction is important to our company, so the fact that tita-nium Fredserts are 40% lighter and available off the shelf are real positives in my book

Ive used pretty much every type of threaded fastener out there, and the Fredsert is definitely the easiest to install; plus you can remove it if you need to

Fredserts can be quickly and easily be removed and replaced using the same equipment, which pro-vides our company with substantial cost savings.

Introduction 2

Table of Contents 4

Testimonials 5

Part Number Definition 6

Product Offering and Material Options 7 Female Style Inserts (Metric) 8 Female Style Inserts (Inch) 10 Appurtenance Style - Classic 12 Appurtenance Style - Pro 14 Male Style 16 Hex Style 18 Corrosion-Resistant Fredserts 20 Fitting Style 22 Non-Standards 24 Self-locating Weld Boss 26 Installation Bolt Lengths 30 Fredsert Hole-Prep Combo Tools 33 Fredsert Installation 34 (CNC & Robotic, Manual, Semi-Auto)

Frequently Asked Questions 36

Notes 39

Table of Contents Testimonials

Part Number Definition

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1. Manufacturer G - General Dynamics2. Product Revision 3. Insert Style(s) I - Female S - Male A - Appurtenance H - Hex F - Fitting4. Thread Configuration M - Metric S - Standard MS - Combination5. Pitch Direction R - Right L - Left6. Insert Material T - Titanium S - Stainless A - Zinc-Plated Steel7. Insert Coating FA = Electro-ceramic Coating Blank = Uncoated

8. Internal Thread Example: Metric: 2025 = M20 x 2.5 Inch: 02528 = 1/4 - 289. External Thread Example: Metric: 3335 = M33 x 3.5 Inch: 05013 = 1/2 - 1310. External Thread Length Example: Metric: 54 = 54mm Inch: 038 = 0.3811. Insert Type T - Thru S - Blind12. Head Thickness (Appurtenance Only) Example: Metric: 30 = 30mm Inch: 038 = 0.3813. Internal Thread Locking L1 = Pre-Load Locking L2 = Bottom Crimp L3 = Nylon Ring

FREDSERT Patent6,530,731 (March 2003)

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Fredsert Product Offering

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Female Style

Male Style

Appurtenance Style Hex Style

Fitting Style Corrosion - Resistant

Fredsert Material Options

Titanium (Ti 6Al-4V) - Excellent strength-to-weight ratio - High corrosion resistance - Great stability at low temperature - Non-Magnetic

Passivated 303 Stainless Steel - Standard, general purpose material - Perfect for original equipment, repair applications

Zinc Plated Steel - 1045 Cold Drawn Steel - Excellent Corrosion Resistance - Standard, General Purpose

Inconel - Perfect for areas exposed to high temperature - Engines, well-drilling, and nuclear - Non-Magnetic - High Corrosion Resistance

Additional Materials Available

Upon Request

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Female Style

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- General purpose insert

- Designed for strength & durability

- Precision ID/OD thread concentricity

- Can be mounted Proud or Flush relative to plate surface

- Titanium option provides 40% weight savings over steel

Didnt find a standard to fit your application? Go to www.fredsert.com and click on Request Quote.Well be happy to design the insert youre looking for.

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Female Style

Metric

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Installation torque values shown are for Titanium Fredserts installed in Aluminum. Different combinations of insert and workpiece material may require different torque value. Contact us with application details.

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Female Style

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Female Style

Inches

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A B C D P Q R S T U V

Part # Part Code ID Thread Minimum

Effective ID Thread Depth(inch)

Overall Length (inch)

Head Dia (inch)

Head Thick-ness (inch)

Min C'bore

Dia (inch)

Min C'bore Depth (inch)

Class 3B Thread in

Parent Material

Min Drill Depth (inch)

Min Thread Depth (inch)

Tap Drill

(inch)

GAISRT01632-03816-033S 805 #8-32 0.33 0.45 0.50 0.13 0.52 0.15 3/8 - 16 0.55 0.45 0.313 D-1.5 C60 60

GAISRT01632-03816-033T 806 #8-32 Thru 0.45 0.50 0.13 0.52 0.15 3/8 - 16 0.55 0.45 0.313 D-1.5 C60 60

GAISRT01932-04414-037S 810 #10-32 0.31 0.50 0.55 0.13 0.57 0.15 7/16 - 14 0.60 0.50 0.368 D-1.5 C61 60

GAISRT01932-04414-037T 811 #10-32 Thru 0.50 0.55 0.13 0.57 0.15 7/16 - 14 0.60 0.50 0.368 D-1.5 C61 60

GAISRT01924-04414-037S 808 #10-24 0.31 0.50 0.55 0.13 0.57 0.15 7/16 - 14 0.60 0.50 0.368 D-1.5 C61 60

GAISRT01924-04414-037T 809 #10-24 Thru 0.50 0.55 0.13 0.57 0.15 7/16 - 14 0.60 0.50 0.368 D-1.5 C61 60

GAISRT02528-05013-038S 818 1/4 - 28 0.37 0.50 0.60 0.13 0.62 0.15 1/2 - 13 0.60 0.50 0.422 D-2 C62 110

GAISRT02528-05013-038T 819 1/4 - 28 Thru 0.50 0.60 0.13 0.62 0.15 1/2 - 13 0.60 0.50 0.422 D-2 C62 110

GAISRT02520-05013-038S 816 1/4 - 20 0.37 0.50 0.60 0.13 0.62 0.15 1/2 - 13 0.60 0.50 0.422 D-2 C62 110

GAISRT02520-05013-038T 817 1/4 - 20 Thru 0.50 0.60 0.13 0.62 0.15 1/2 - 13 0.60 0.50 0.422 D-2 C62 110

GAISRT03124-05612-048S 823 5/16 - 24 0.47 0.60 0.70 0.13 0.72 0.15 9/16 - 12 0.70 0.60 0.484 D-3 C63 130

GAISRT03124-05612-048T 824 5/16 - 24 Thru 0.60 0.70 0.13 0.72 0.15 9/16 - 12 0.70 0.60 0.484 D-3 C63 130

GAISRT03118-05612-048S 820 5/16 - 18 0.47 0.60 0.70 0.13 0.72 0.15 9/16 - 12 0.70 0.60 0.484 D-3 C63 130

GAISRT03118-05612-048T 821 5/16 - 18 Thru 0.60 0.70 0.13 0.72 0.15 9/16 - 12 0.70 0.60 0.484 D-3 C63 130

GAISRT03824-06311-063S 827 3/8 - 24 0.50 0.75 0.81 0.13 0.83 0.15 5/8 - 11 0.85 0.75 0.531 D-4 C66 130

GAISRT03824-06311-063T 828 3/8 - 24 Thru 0.75 0.81 0.13 0.83 0.15 5/8 - 11 0.85 0.75 0.531 D-4 C66 130

GAISRT03816-06311-063S 825 3/8 - 16 0.50 0.75 0.81 0.13 0.83 0.15 5/8 - 11 0.85 0.75 0.531 D-4 C66 130

GAISRT03816-06311-063T 826 3/8 - 16 Thru 0.75 0.81 0.13 0.83 0.15 5/8 - 11 0.85 0.75 0.531 D-4 C66 130

GAISRT03816-06311-088T 860 3/8 - 16 Thru 1.00 0.81 0.13 0.83 0.15 5/8 - 11 1.10 1.00 0.531 D-4 C66A 130

GAISRT04420-07510-072S 831 7/16 - 20 0.66 0.84 0.90 0.13 0.92 0.15 3/4 - 10 0.94 0.84 0.656 D-4.5 C67 275

GAISRT04420-07510-072T 832 7/16 - 20 Thru 0.84 0.90 0.13 0.92 0.15 3/4 - 10 0.94 0.84 0.656 D-4.5 C67 275

GAISRT04414-07510-072S 829 7/16 - 14 0.66 0.84 0.90 0.13 0.92 0.15 3/4 - 10 0.94 0.84 0.656 D-4.5 C67 275

GAISRT04414 07510 072T 830 7/16 14 Thr 0 84 0 90 0 13 0 92 0 15 3/4 10 0 94 0 84 0 656 D 4 5 C67 275

Fredsert Data Installation Data

Drive Tool

Combo Tool

Install Torque (ft-lbs)

GAISRT04414-07510-072T 830 7/16 - 14 Thru 0.84 0.90 0.13 0.92 0.15 3/4 - 10 0.94 0.84 0.656 D-4.5 C67 275

GAISRT05020-08809-082S 836 1/2 - 20 0.75 0.95 1.13 0.13 1.15 0.15 7/8-9 1.05 0.95 0.766 D-6 C68 500

GAISRT05020-08809-082T 837 1/2 - 20 Thru 0.95 1.13 0.13 1.15 0.15 7/8-9 1.05 0.95 0.766 D-6 C68 500

GAISRT05013-08809-082S 833 1/2 -13 0.75 0.95 1.13 0.13 1.15 0.15 7/8-9 1.05 0.95 0.766 D-6 C68 500

GAISRT05013-08809-082T 834 1/2 - 13 Thru 0.95 1.13 0.13 1.15 0.15 7/8-9 1.05 0.95 0.766 D-6 C68 500

GAISRT05618-08809-091S 840 9/16 - 18 0.81 1.03 1.19 0.13 1.21 0.15 7/8 - 9 1.13 1.03 0.766 D-6 C69 500

GAISRT05618-08809-091T 841 9/16 - 18 Thru 1.03 1.19 0.13 1.21 0.15 7/8 - 9 1.13 1.03 0.766 D-6 C69 500

GAISRT05612-08809-091S 838 9/16 - 12 0.81 1.03 1.19 0.13 1.21 0.15 7/8 - 9 1.13 1.03 0.766 D-6 C69 500

GAISRT05612-08809-091T 839 9/16 - 12 Thru 1.03 1.19 0.13 1.21 0.15 7/8 - 9 1.13 1.03 0.766 D-6 C69 500

GAISRT06318-10008-100S 844 5/8 - 18 0.87 1.13 1.25 0.13 1.27 0.15 1 - 8 1.23 1.13 0.875 D-6 C71 500

GAISRT06318-10008-100T 845 5/8 - 18 Thru 1.13 1.25 0.13 1.27 0.15 1 - 8 1.23 1.13 0.875 D-6 C71 500

GAISRT06311-10008-100S 842 5/8 - 11 0.87 1.13 1.25 0.13 1.27 0.15 1 - 8 1.23 1.13 0.875 D-6 C71 500

GAISRT06311-10008-100T 843 5/8 - 11 Thru 1.13 1.25 0.13 1.27 0.15 1 - 8 1.23 1.13 0.875 D-6 C71 500

GAISRT07516-12507-119S 848 3/4 - 16 1.13 1.38 1.42 0.19 1.44 0.21 1-1/4 - 7 1.48 1.38 1.109 D-7 C73 700

GAISRT07516-12507-119T 849 3/4 - 16 Thru 1.38 1.42 0.19 1.44 0.21 1-1/4 - 7 1.48 1.38 1.109 D-7 C73 700

GAISRT07510-12507-119S 846 3/4 - 10 1.13 1.38 1.42 0.19 1.44 0.21 1-1/4 - 7 1.48 1.38 1.109 D-7 C73 700

GAISRT07510-12507-119T 847 3/4 - 10 Thru 1.38 1.42 0.19 1.44 0.21 1-1/4 - 7 1.48 1.38 1.109 D-7 C73 700

GAISRT08814-13806-131S 852 7/8 - 14 1.31 1.53 1.69 0.22 1.71 0.24 1-3/8 - 6 1.63 1.53 1.219 D-9 C74 800

GAISRT08814-13806-131T 853 7/8 - 14 Thru 1.53 1.69 0.22 1.71 0.24 1-3/8 - 6 1.63 1.53 1.219 D-9 C74 800

GAISRT08809-13806-131S 851 7/8 - 9 1.31 1.53 1.69 0.22 1.71 0.24 1-3/8 - 6 1.63 1.53 1.219 D-9 C74 800

GAISRT08809-13806-131T 850 7/8 - 9 Thru 1.53 1.69 0.22 1.71 0.24 1-3/8 - 6 1.63 1.53 1.219 D-9 C74 800

GAISRT10012-15006-150S 856 1 - 12 1.50 1.75 1.84 0.25 1.86 0.27 1-1/2 - 6 1.85 1.75 1.344 D-10 C76 1000

GAISRT10012-15006-150T 857 1 - 12 Thru 1.75 1.84 0.25 1.86 0.27 1-1/2 - 6 1.85 1.75 1.344 D-10 C76 1000

GAISRT10008-15006-150S 854 1 - 8 1.50 1.75 1.84 0.25 1.86 0.27 1-1/2 - 6 1.85 1.75 1.344 D-10 C76 1000

GAISRT10008-15006-150T 855 1 - 8 Thru 1.75 1.84 0.25 1.86 0.27 1-1/2 - 6 1.85 1.75 1.344 D-10 C76 1000


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Appurtenance Style - Classic






A shock-absorbing feature can be applied to any Appurtenance style Fredsert. This feature is designed to allow the insert to deform, thereby absorbing a substantial amount of force instead of transmitting it like a solid insert would.

A shock absorbing Fredsert can be applied to protect occupants and sensitive equipment by reducing the amount of force trans-ferred into the vehicle. Please contact us with specific applica-tion details and well design a shock-absorbing Fredsert to fit your needs.


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Appurtenance Style

Classic


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Appurtenance Style - Pro

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- Used where a stand-off or clearance is required

- No driver needed - socket head built into Fredsert

- Eliminates need for weld bosses





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Appurtenance Style

Pro


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Male Style

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- Used where an externally-threaded boss is needed


- Precision thread concentricity



Male Style

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Hex Style

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- Bolt installed from opposite side of plate

- Provides design flexibility for difficult areas


- No driver needed - socket hex built into Fredsert




Hex Style

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Extreme Corrosion Resistant

- Electro-ceramic coating eliminates potential for galvanic corrosion

- Used in areas where standing water can become trapped

- Alodine EC2 coating is patented by the Henkel Corporation

- Please visit www.henkelec2.com/features.htm for coating details

Extreme Corrosion-resistant coating can be applied to any standard or custom Fredsert, upon request.


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Extreme Corrosion Resistant


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Fitting Style

- Used where a hydraulic fitting passes through a wall

- Fredsert creates seal on external threads without Loctite


- Precision ID/OD concentricity



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Fitting Style


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Non-Standard Fredserts

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- Thin wall designs

- Non-standard ID/OD thread combinations

- Medium/Light-duty designs


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Non-Standard Fredserts


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Self-Locating Weld Boss

- Available in variety of materials

- Eliminate need for fixture to locate Weld Bosses

- Can be used in manual or friction welding applications

- Shear strength increase over plain Weld Boss

- Requires shallow spot-face in plate

Weld Boss Material Options- STL = High Strength Alloy Steel (100 ksi)

- AL = 6000-Series Aluminum Alloy

- CRES = 303 Stainless CRES

- Other materials available upon request


Metric

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- Available in variety of materials

- Eliminate need for fixture to locate Weld Bosses

- Can be used in manual or friction welding applications

- Shear strength increase over plain Weld Boss

- Requires shallow spot-face in plate

Weld Boss Material Options- STL = High Strength Alloy Steel (100 ksi)

- AL = 6000-Series Aluminum Alloy

- CRES = 303 Stainless CRES

- Other materials available upon request


Inches

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Installation Bolt Lengths

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Bolt Lengths

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Bolt Lengths

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Combo Tools

Hole Prep Conventional Tooling

Hole Prep Fredsert Combo Tool

- Eliminate (3) Tool-changes per hole versus conventional hole-prep

- Reduce setup time, cycle time, inventory, toolholders, etc

- No center drilling needed, even on irregular surfaces

- Coated and uncoated options available

- Short lead time & reasonable price

- Perfect concentricity of counterbore to thread

Refer to Combo Tool column on standard Fredsert pages to find appropriate tool.

Fredsert Combo Tools feature a 135-degree drill point; other options available upon request.

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- Low-production and high-production options

- Each driver covers several different Fredserts- Built for durability from heat-treated tool steel

Fredsert Instalation

Semi-Automated

Place torque wrench on Fredsert.

Assemble driver to Fredsert with bolt for both manual and semi-automated installations.

Tighten Fredsert in threaded hole until snug. Install Fredsert to speci-fied torque value (see chart).

Remove driver from Fredsert after install is complete.

Install Fredsert to speci-fied torque value (see chart).

Remove driver from Fredsert after install is complete.

Tighten Fredsert in hole until snug.

Refer to Drive Tool column on standard Fredsert pages to find appropriate driver.

Manual

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CNC Installation (Fully Automated)

The CNC installation method uses an adaptor similar to a tension / compression tap holder to pull Fredserts from a tray and install them into tapped holes at a speci-fied torque value. This capability enables users to combine machin-

Robotic Installation (Fully Automated)

The robotic installation method con-sists of a robotic arm with an elec-tric nut-runner that picks Fredserts from a tray and installs them into tapped holes. Such a set-up allows manufacturers to install inserts into several surfaces of a compo-nent in a single setup. Guided by an on-board vision system, robotic

ing and insert installation in one setup, a significant step toward Lean Production. This level of pro-cess control also ensures consistent and accurate installation every time, since the location and installation are precisely controlled by the CNC

program. Incorporating this pro-cess requires relatively little invest-ment, because the most expensive component, the CNC machine, is already there to machine the part.

installation ensures proper place-ment regardless of variation in the workpiece. This approach allows installation into multiple surfaces in a single setup; perfect for applica-tions involving large, complex parts. Fully automated threaded insert installation dramatically changes the way aluminum components and

structures are assembled in aero-space, defense, automotive, and other industries.

The ability to fully automate instal-lation also reduces overall process time and cost.

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Frequently Asked Questions

Background Information

Q. Why is a Fredsert, called a Fredsert?

A. Fredserts were initially designed for the Expedi-tionary Fighting Vehicle (EFV) by an Engineer named Fred Wheeler. Fred designed the product to meet the unique demands of the EFV program, which included a water-tight seal, solid locking to prevent back-out, corrosion resistance in extended saltwa-ter exposure, and the ability to be easily removed and replaced in the field. The use of Fredserts has since expanded to a number of other applications both inside and outside General Dynamics.

Q. What materials are Fredserts made from?

A. Fredserts are available in Titanium, Passivated Stainless Steel, Inconel, and Zinc-plated steel. For more details on these materials, please refer to page 7. For extremely corrosive applications, an electro-ceramic coating is available that eliminates poten-tial for galvanic corrosion. For more details, please refer to page 20.

Q. How do Fredserts compare with competitive inserts, such as Keensert, Rosan or Helicoil?

A. One of the most unique features of a Fredsert is that it doesnt permanently lock into place. Instead, its patented geometry causes it to break away at approximately 80% of the recommended installa-tion torque value, allowing it to be quickly and easily removed and replaced using the same equipment. By comparison, other inserts on the market can only be removed by drilling them out and, in some cases, re-tapping to the next largest tap size. This drilling and/or tapping process is especially difficult if the insert is installed in a large structure or a tight enclosure because access and rigidity are limited. Another feature that sets Fredserts apart is the fact that Titanium Fredserts are available as a standard product, in addition to those made from Stainless, Inconel, and Zinc-plated steel. Titanium Fredserts deliver weight savings of 40% over steel inserts of the same size. Titanium inserts from other leading insert manufacturers are either not an option or they are quoted at a high price with sev-eral months lead time. A third key benefit that differentiates Fredserts from the competition is the fact that they create a watertight seal without the use of a thread lock-ing agent, such as Loctite. The combination of a tapered thread profile, 100% thread engagement,

and a flanged head deliver a perfect seal on the OD thread of the insert. Blind Fredserts also deliver a watertight seal on the ID thread, because the ID thread bore doesnt break through the bottom of the insert.

Q. What is the typical delivery lead time for Fredserts?

A. Standard Fredserts are generally available in 1-2 week, or less. For large orders and custom geom-etries, a lead time of 2-4 weeks is typical.

Q. Is there a cost advantage to using Fredserts?

A. The fact that Fredserts can be quickly and easily removed and replaced using the same equipment provides substantial logistical cost benefits. If a customer wants to use a titanium threaded insert to take advantage of 40% weight savings, the best option is a Fredsert. Threaded insert manufactur-ers primarily offer Stainless and Alloy Steel inserts. The pricing for Stainless Steel Fredserts is very comparable to that of the competitors. Most competitors do not offer threaded inserts in Titanium, and those that do typically offer non-standards, resulting in a high price and several months lead time. Titanium Fredserts, on the other hand, are reasonably priced with short lead time. Request a quote and let us prove it to you.

Installation, Removal & Replacement

Q. What equipment is required to install and remove Fredserts?

A. - Installation tool (see Drive Tool column on standard Fredsert pages) - Allen head cap screw (See Bolt Length chart on page 30 for lengths) - Allen wrench to assemble driver to Fredsert - Torque wrench with the proper torque range for insert being installed

Q. Can a Fredsert be removed and reused?

A. Fredserts can be removed and re-installed, as long as theres no damage to the insert or the tapped hole. This is not recommended on a repeated basis, though, because when you install a Fredsert, the cutting edges can eventually become dull, leading to galling of the threads in your parent material.

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Q. Is it necessary to begin threading the Fredsert in by hand to get it started?

A. For manual installation, starting the insert by hand is important to avoid cross-threading the insert and damaging the tapped hole in the parent material. For high-volume Fredsert installations, drive tools are available that eliminate the need to assemble the driver to the insert with a bolt. These spring-loaded drivers enable Fredsert installation in a fraction of the time.

Q. What happens if I break a bolt off inside the Fredsert?

A. If possible, remove the Fredsert with the bolt still in and replace with a new Fredsert in the same hole. If you cant remove the Fredsert with the bolt still in, youll need to drill out the bolt, then check the inter-nal threads of the Fredsert.

Q. What should I do if Ive reached the rec-ommended installation torque value and the Fredsert is not yet seated on the surface of the plate?

A. If youve reached the proper torque value and the Fredsert has yet to seat on the plate, you can go 10% above the recommended installation torque to see if it will seat. If it still will not seat, remove the Fredsert and run a tap down through the hole to clean out any burrs or debris that may be causing the problem.

Q. When a Fredsert is being removed, at what torque value will it break-away and start to back out?

A. Break-away value is the torque that it takes to back the Fredsert out. After initial installation, break-away will be approximately 80% of installa-tion torque value. If the same insert is re-installed into the same hole, the break-away value will be slightly reduced. The reason is that a Fredsert actu-ally cuts material as its installed, so if you install a Fredsert into a hole for a second time, theres no material to cut. Even so, the tapered thread profile, 100% thread engagement, and flanged head will still deliver a break-away torque of 65-75% of the recom-mended installation torque.

Q. Is it necessary to use a thread-locking agent, such as Loctite, when installing Fredserts?

A. No. There is no need for using Loctite for install-ing a Fredsert, unless you are doing a repair proce-dure. The combination of a tapered thread profile, 100% thread engagement, and a flanged head deliver a perfect seal on the OD thread of the insert. Blind Fredserts also deliver a watertight seal on the ID thread, because the ID thread bore doesnt

break through the bottom of the insert.

Q. When preparing a tapped hole to install a Fredsert, is it necessary to counterbore the hole?

A. The only reason to counterbore the hole is if the application requires that the insert mount flush with the material surface. Otherwise, the insert can be mounted proud, where the Fredsert flange sits on top of the material surface. Appurtenance-style Fredserts are always mounted proud because they are used as a stand-off. There is no Fred-sert performance difference between flush mount and proud mount.

Fredsert Geometry

Q. How does a Fredsert lock into place?

A. The Fredsert geometry is effective in that it com-bines a tapered thread profile, 100% thread engage-ment, cutting flutes and a flanged head. These unique features deliver a combination of friction fit and material compression that reliably lock a Fred-sert in place. Fredserts were designed to resist vibration, tensile loading and shear loading in the most demanding heavy-duty applications.

Q. What effect does Fredsert quality have on the installation process?

A. Fredserts are manufactured to tight specifi-cations to ensure consistent and reliable perfor-mance. Fredserts are inspected on the latest visual inspection equipment to ensure that the critical design elements are produced within specifica-tion. The Fredsert inspection process requires that manufacturers closely monitor quality, eliminating potential for variation.

Fredsert Application

Q. How does a user decide which Fredsert size to use?

A. The Fredsert size chosen depends on the bolt size being used in the application, as well as the thickness of the material its being installed into. The Fredsert product line has been developed with a generous safety factor between the bolt break-away torque and the Fredsert break-away torque to ensure that the Fredsert will not back out when the bolt is removed.

Q. Are there applications where a Fredsert is not the best option?

A. The only case where competitive inserts have an advantage over Fredserts is in an application where

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Frequently Asked Questions

the absolute minimum space claim is required. Because Fredserts feature a flanged head, they take up a slightly larger area than competitive inserts such as Helicoil and Keensert.

Q. Are Fredserts effective in applications where a water-tight seal is needed?

A. A key benefit that differentiates Fredserts from the competition is the fact that they create a 100% watertight seal without the use of a thread lock-ing agent, such as Loctite. The combination of a tapered thread profile, 100% thread engagement, and a flanged head deliver a perfect seal on the OD thread of the insert. Blind Fredserts also deliver a watertight seal on the ID thread, because the ID thread bore doesnt break through the bottom of the insert.

Marketing & Distribution

Q. How can I request a quote for a custom Fredsert?

A. On the Fredsert website, select the Build Custom tab, enter necessary information, and click the Build button. The design tool will build a custom Fredsert geometry specifically for your application. If youd like to have a cost and lead time quote for this custom Fredsert, click on the Request a Quote button.

Q. Are Fredserts available for commercial use?

A. Fredserts are manufactured for commercial sale exclusively through Miller Precision Industries. Contact Miller Precision at 419-453-3251.

Q. Who can I contact for Fredsert technical support?

A. Contact Jason Deters, General Dynamics Land Systems, at 586-825-5664, or Miller Precision at 419-453-3251.

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Notes

For more information contact:General Dynamics Land Systems

email: [email protected]

or

Miller Precision Industries

tel: 419.453.3251

Fredsert Features & Benefits -CertifiedtoMIL-I-45914A - Lower Total Cost - Simple Installation - Simple Replacement - Short Lead Time - Fully Automated Installation Option - Locking Internal Thread Available - Available in Variety of Materials - Built with Pride in the USA

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- Aircraft/Aerospace Industry

- Military Vehicles

- Pneumatic and Hydraulic Fittings

- Agricultural Equipment OEMs

- Ship and Submarine Applications

- Automotive - Aluminum Engine Blocks & Castings

- Transportation Industries - Truck, Train, Bus OEMs

Threaded InsertsFREDSERT

Product Catalog Revision M

FREDSERT - Next Generation Threaded Insert Technology - Catalog

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Transcript of FREDSERT - Next Generation Threaded Insert Technology - Catalog