About Durometer Hardness Scales
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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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Tube-End Weld Nuts
Weld these nuts to round uncoated metal tubes to attach threaded parts, such as rod ends. Also known as tube adapters and weldable threaded tube ends.
For technical drawings and 3-D models, click on a part number.
Left-Hand Threaded Tube-End Weld Nuts
Use these tube-end nuts with left-hand threaded fasteners. You can weld them to round uncoated metal tubes to attach threaded parts, such as rod ends. Also known as tube adapters and weldable threaded tube ends.
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 1/4"-12 | 1 5/8"-12 | 1 13/16" | 1 9/16" | 1 9/16" | 4 | 2 | 000000000 | 0000000 |
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 1/4"-12 | 1 1/4" | 1 9/32" | 1 9/32" | MS124-667 | 1 | 000000000 | 000000 | 000000000 | 0000000 | 000000000 | 0000000 | 000000000 | 0000000 |
| 1 1/4"-12 | 1 7/8" | 1 9/32" | 1 9/32" | MS124-707 | 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 1/4"-12 | 1 7/8" | 1 9/32" | 1 9/32" | 4 | Drill Bit, Through-Hole Tap, Installation Tool | 000000000 | 0000000 |
Threaded Bumpers
Mount these bumpers on a threaded stud. All are reinforced with a steel core or base plate for strength. Often used as feet, spacers, and vibration dampers, they absorb shock to prevent damage to equipment and surfaces. They're also good for starting and stopping motion on automated machines. All of these bumpers can be used outdoors.
Bumpers with a medium and medium-soft rating offer a balance of cushioning and impact resistance. The softer the bumper, the more it cushions.
Bumpers with an extra-hard, hard, and medium-hard rating withstand high levels of impact. The harder the bumper, the more impact it withstands.
Neoprene bumpers have good abrasion resistance.
Polyurethane bumpers have better abrasion resistance than neoprene bumpers. They won't become brittle and crack when exposed to ozone.
For technical drawings and 3-D models, click on a part number.
Thread | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Dp. | OD | Ht. | Temp. Range, °F | For Use Outdoors | Hardness Rating | Hardness | Nonmarking | Color | Each | |
Neoprene Rubber with Steel Core | |||||||||||
| 1 1/4"-12 | 1 1/4" | 3" | 2 3/4" | -40° to 200° | Yes | Hard | Durometer 75A | No | Black | 00000000 | 000000 |
| 1 1/4"-12 | 1 1/4" | 3" | 2 3/4" | -40° to 200° | Yes | Medium Soft | Durometer 40A | No | Black | 0000000 | 00000 |
Polyurethane Rubber with Steel Core | |||||||||||
| 1 1/4"-12 | 1 1/4" | 3" | 2 3/4" | -40° to 200° | Yes | Hard | Durometer 85A | No | Red | 0000000 | 00000 |