How to Install Helical Inserts
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About Helical Insert Length
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How to Install Key-Locking Inserts
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Threaded Round Plugs for 37° Flared Tube

Designed to fit into 37° flared connections such as those found on JIC and SAE fittings, these plugs protect internally threaded connections from contaminants during fabrication and storage. Install them manually.
Polyethylene plugs resist chemicals better than aluminum plugs.
For technical drawings and 3-D models, click on a part number.
Threaded Caps

Protect externally threaded components from contaminants during fabrication and storage.
Plastic caps resist corrosion better than aluminum caps.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||||
---|---|---|---|---|---|---|---|---|
Size | Type | For OD | Inside Ht. | Max. Temp., °F | Color | Pkg. Qty. | Pkg. | |
Plastic | ||||||||
For Straight-Thread Pipe | ||||||||
1/4"-36 | UNS | 1/4" | 7/32" | 150° | Red | 100 | 00000000 | 00000 |
7/16"-24 | UNS | 7/16" | 19/64" | 150° | Red | 100 | 00000000 | 0000 |
3/4"-18 | UNS | 3/4" | 11/16" | 150° | Red | 100 | 00000000 | 00000 |
7/8"-18 | UNS | 7/8" | 25/32" | 150° | Red | 100 | 00000000 | 00000 |
1"-14 | UNS | 1" | 25/32" | 150° | Red | 100 | 0000000 | 00000 |
1 1/16"-14 | UNS | 1 1/16" | 3/4" | 150° | Red | 100 | 00000000 | 00000 |
Caps for Mini Connectors




Protect mini connectors when not in use.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||||
---|---|---|---|---|---|---|---|---|
For Face Dia. | Size | Type | Material | Color | Temp. Range, °F | Includes | Each | |
External Thread | ||||||||
0.55" | 7/8"-16 | UNS | Epoxy-Coated Zinc | Black | 0° to 220° | Lanyard | 00000000 | 000000 |
0.7" | 1"-16 | UNS | Epoxy-Coated Zinc | Black | 0° to 220° | Lanyard | 00000000 | 00000 |
0.8" | 1 1/8"-16 | UNS | Epoxy-Coated Zinc | Black | 0° to 220° | Lanyard | 00000000 | 00000 |
0.87" | 1 3/8"-16 | UNS | Anodized Aluminum | __ | -40° to 190° | __ | 0000000 | 00000 |
Internal Thread | ||||||||
0.55" | 7/8"-16 | UNS | Anodized Aluminum | __ | 0° to 220° | Lanyard | 00000000 | 00000 |
0.7" | 1"-16 | UNS | Anodized Aluminum | __ | 0° to 220° | Lanyard | 00000000 | 00000 |
0.8" | 1 1/8"-16 | UNS | Anodized Aluminum | __ | 0° to 220° | Lanyard | 00000000 | 00000 |
0.87" | 1 3/8"-16 | UNS | Anodized Aluminum | __ | -40° to 190° | __ | 0000000 | 00000 |
Caps for Harsh Environment Mini Connectors


Protect mini connectors when not in use. These caps are stainless steel for excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
---|---|---|---|---|---|---|
For Face Dia. | Size | Type | Material | Temp. Range, °F | Each | |
External Thread | ||||||
0.55" | 7/8"-16 | UNS | Stainless Steel | 0° to 220° | 00000000 | 000000 |
0.7" | 1"-16 | UNS | Stainless Steel | 0° to 220° | 00000000 | 00000 |
0.8" | 1 1/8"-16 | UNS | Stainless Steel | 0° to 220° | 00000000 | 00000 |
Internal Thread | ||||||
0.55" | 7/8"-16 | UNS | Stainless Steel | 0° to 220° | 00000000 | 00000 |
0.7" | 1"-16 | UNS | Stainless Steel | 0° to 220° | 00000000 | 00000 |
0.8" | 1 1/8"-16 | UNS | Stainless Steel | 0° to 220° | 00000000 | 00000 |
Caps for Mil. Spec. Screw-Together Connectors


Protect Mil. Spec. connectors when not in use.
For technical drawings and 3-D models, click on a part number.
Caps for Wet-Location USB Cords

Screw these caps onto the socket end of wet-location USB cords. They maintain an IP67 rating when cords are not in use.
Thread | ||||||||
---|---|---|---|---|---|---|---|---|
Housing Connection Type | Size | Type | Material | Environment | Environmental Rating | Color | Each | |
Screw Together | 13/16"-28 | UNS | Plastic | Dusty, Submersible | IP67 | Black | 000000 | 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 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 |
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 |
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 |