About Nuts, Materials, and Finishes
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How to Install Key-Locking Inserts
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How to Install Helical Inserts
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About Helical Insert Length
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Black-Phosphate Steel Easy-to-Install Thread-Locking Inserts
A black-phosphate finish provides mild corrosion resistance. Also known as E-Z Lok, these inserts use Loctite® adhesive to keep them in place. The adhesive reaches full strength after 72 hours. Installation requires a drill bit and a standard tap. Then set the insert with a bolt and two nuts, or use an installation bit.
Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole.
To drive slotted inserts, you can use a slotted screwdriver instead of using an installation bit or a bolt and two nuts.
For technical drawings and 3-D models, click on a part number.
Black-Phosphate Steel Key-Locking Inserts
A black-phosphate finish provides mild corrosion resistance. Drive the keys into the surrounding material for a more secure hold than thread-locking inserts. Use them to repair or change threads in soft metals such as aluminum. They’re comparable to Keensert® inserts. Installation requires a drill bit, a standard tap, an installation tool, and a hammer.
Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole with stripped threads.
For technical drawings and 3-D models, click on a part number.
Key-Locking Inserts with Installation Tool
Drive the keys into the surrounding material for a more secure hold than thread-locking inserts. These inserts are used to repair or convert threads in soft metals such as aluminum. They’re comparable to Keensert® inserts.
Black-phosphate steel inserts are mildly corrosion resistant.
Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole.
For technical drawings and 3-D models, click on a part number.
| Thread Size  | For Tap Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | No. of Locking Keys | No. of Inserts Included | Each | |
Black-Phosphate Steel with Thick Wall | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1"-14 | 1 3/8"-12 | 1 3/8" | 1 5/16" | 1 5/16" | 4 | 2 | 000000000 | 000000 |
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 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Specifications Met | Pkg. Qty. | Pkg. | Each | Each | Each | ||||
18-8 Stainless Steel—Right-Hand Threaded | |||||||||||||
| 1"-14 | 1" | 1 1/32" | 1 1/32" | MS124-665 | 1 | 000000000 | 000000 | 000000000 | 0000000 | 000000000 | 0000000 | 000000000 | 0000000 |
| 1"-14 | 1 1/2" | 1 1/32" | 1 1/32" | MS124-705 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 |
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Pkg. Qty. | Pkg. | Each | Each | Each | ||||
18-8 Stainless Steel | ||||||||||||
| 1"-14 | 1" | 1 1/32" | 1 1/32" | 1 | 000000000 | 00000 | 000000000 | 0000000 | 000000000 | 0000000 | 000000000 | 0000000 |
| 1"-14 | 1 1/2" | 1 1/32" | 1 1/32" | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 |
Helical Inserts with Installation Tools
Inserts come with a through-hole tap and installation tool. Also known as Heli-Coil inserts, they 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.
| Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | No. of Inserts Included | Includes | Each | |
18-8 Stainless Steel—Right-Hand Threaded | |||||||
|---|---|---|---|---|---|---|---|
| 1"-14 | 1 1/2" | 1 1/64" | 1 1/64" | 6 | Drill Bit, Through-Hole Tap, Installation Tool | 000000000 | 0000000 |
Ultra-Fine-Threaded Inserts for Plastic
Use these inserts to install fine-threaded screws in existing holes. Made from brass, they’re corrosion resistant, electrically conductive, and nonmagnetic. Press them into a drilled hole.
For technical drawings and 3-D models, click on a part number.
Flange | ||||||||
|---|---|---|---|---|---|---|---|---|
| Thread Size | Installed Lg. | Body Lg. | Dia. | Thick. | Drill Bit Size | For Max. Hole Dia. | Each | |
Brass | ||||||||
| 6-80 | 1/4" | 0.225" | 1/4" | 0.03" | 7/32" | 7/32" | 000000000 | 00000 |
| 6-80 | 3/8" | 0.35" | 1/4" | 0.03" | 7/32" | 7/32" | 000000000 | 0000 |
| 3/16"-100 | 5/16" | 0.298" | 0.29" | 0.01" | 1/4" | 1/4" | 000000000 | 0000 |
| 3/16"-100 | 7/16" | 0.423" | 0.29" | 0.01" | 1/4" | 1/4" | 000000000 | 0000 |
| 3/16"-100 | 5/8" | 0.61" | 0.29" | 0.01" | 1/4" | 1/4" | 000000000 | 0000 |
| 3/16"-100 | 3/4" | 0.735" | 0.29" | 0.01" | 1/4" | 1/4" | 000000000 | 0000 |
| 1/4"-80 | 5/16" | 0.298" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 1/4"-80 | 7/16" | 0.423" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 1/4"-80 | 5/8" | 0.61" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 1/4"-80 | 3/4" | 0.735" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 1/4"-100 | 5/16" | 0.298" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 1/4"-100 | 7/16" | 0.423" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 1/4"-100 | 5/8" | 0.61" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 1/4"-100 | 3/4" | 0.735" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
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 | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1"-14 | 1.53" | 1.52" | Partially Threaded | 0.81" | 1.606" | 1" | 000000000 | 000000 |