System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Thread Type Thread Type |
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Material Material |
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Nut Type Nut Type |
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 | Socket Head |
Thread Direction Thread Direction |
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Specifications Met Specifications Met |
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For Hole Diameter For Hole Diameter |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Thread Spacing Thread Spacing |
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Threaded Insert Type Threaded Insert Type |
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 | Helical |
Drive Style Drive Style |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Threading Threading |
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 | Partially Threaded |
Thread Fit Thread Fit |
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Helical Insert Style Helical Insert Style |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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For Tap Type For Tap Type |
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About Nuts, Materials, and Finishes
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How to Install Helical Inserts
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About Helical Insert Length
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Stainless Steel Socket Nuts
These nuts are chemical resistant and may be mildly magnetic. Also known as Allen nuts, use them with socket head cap screws in recessed holes and tight spaces that don't have enough clearance for a wrench. Tighten them with a 6-point hex key. They can also be used as an insert by pressing or drawing them into nonhardened steel, cast iron, or soft nonferrous metal or by molding them into plastic, ceramic, fiber, and similar materials.
For technical drawings and 3-D models, click on a part number.
| Thread Size | OD | Ht. | Threading | Thread Dp. | For Hole Dia. | Hex Key Size | Each | |
18-8 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 5-40 | 0.19" | 0.21" | Partially Threaded | 0.1" | 0.202" | 1/8" | 000000000 | 00000 |
Alloy Steel Socket Nuts
Also known as Allen nuts, use these with socket head cap screws in recessed holes and tight spaces that don't have enough clearance for a wrench. Tighten them with a 6-point hex key. They can also be used as an insert by pressing or drawing them into nonhardened steel, cast iron, or soft nonferrous metal or by molding them into plastic, ceramic, fiber, and similar materials. Made from alloy steel, they're comparable in strength to Grade 9 bolts.
For technical drawings and 3-D models, click on a part number.
| Thread Size | OD | Ht. | Threading | Thread Dp. | For Hole Dia. | Hex Key Size | Each | |
Alloy Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 5-40 | 0.18" | 0.2" | Partially Threaded | 0.1" | 0.202" | 1/8" | 000000000 | 00000 |
Stainless Steel Helical Inserts
Also known as Heli-Coil inserts, these inserts have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.
For technical drawings and 3-D models, click on a part number.
Inserts | Through-Hole Taps | Closed-End Hole Taps | Installation Tools | Prong Break-Off Tools | |||||||||||
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| Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Specifications Met | Pkg. Qty. | Pkg. | Each | Each | Each | Each | |||||
18-8 Stainless Steel—Right-Hand Threaded | |||||||||||||||
| 5-40 | 1/8" | No. 29 | 0.136" | MS122-077 | 10 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 0000000 | 000000000 | 000000 |
| 5-40 | 0.188" | No. 29 | 0.136" | MS122-117 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 5-40 | 1/4" | No. 29 | 0.136" | MS122-157 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
Stainless Steel Screw-Locking Helical Inserts
A distorted thread grips the screw to resist loosening. Also known as Heli-Coil inserts, these inserts have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.
For technical drawings and 3-D models, click on a part number.
Inserts | Through-Hole Taps | Closed-End Hole Taps | Installation Tools | Prong Break-Off Tools | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Specifications Met | Pkg. Qty. | Pkg. | Each | Each | Each | Each | |||||
18-8 Stainless Steel | |||||||||||||||
| 5-40 | 1/8" | No. 29 | 0.136" | MS21209C0510, NASM21209 | 10 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 0000000 | 000000000 | 000000 |
| 5-40 | 0.188" | No. 29 | 0.136" | MS21209C0515, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 5-40 | 1/4" | No. 29 | 0.136" | MS21209C0520, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
Helical Insert Assortments with Installation Tools
Assortments include various sizes of helical inserts and a tap, a drill bit, and an installation tool for each thread size. Also known as Heli-Coil inserts, the inserts have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw.
| Includes | No. of Inserts Included | Thread Spacing | Drill Bit Size | For Max. Hole Dia. | Each | |
Inch | ||||||
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18-8 Stainless Steel | ||||||
| Prong Break-Off Tool 5-40 Thread × 1/8" Installed Lg. (12 Each) 5-40 Thread × 0.188" Installed Lg. (12 Each) 5-40 Thread × 1/4" Installed Lg. (12 Each) Drill Bit Through-Hole Tap Installation Tool | 36 | Coarse | No. 29 | 0.136" | 000000000 | 0000000 |