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Steel Heavy Duty Twist-Resistant Hex-Shaped Rivet Nuts
Our most twist-resistant rivet nuts, these hex nuts are held in place by their flat sides to keep them from spinning as you tighten screws. With thick walls that hold up in heavy duty applications, they're also among our strongest rivet nuts. Installation only requires access to one side of sheet metal. The flange distributes the load and secures these nuts to the surface of your material. Made of zinc-plated steel, they resist corrosion in wet environments.
Install in a hex-shaped punched hole with a hydraulic or power-driven rivet nut tool. The tool collapses the nut, creating a backside flange that holds the nut to the material.
Length is measured from under the flange. Installed length is the maximum length of the barrel when installed.
For technical drawings and 3-D models, click on a part number.
Body | Flange | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size  | Wd. Across Flats | For Material Thick. | Type | Dia. | Lg. | Installed Lg. | Dia. | Thick. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | |||||||||||
| 10-24 | 7/32" | 0.010" to 0.085" | Hex | 0.223" | 0.301" | 0.200" | 0.344" | 0.043" | 25 | 000000000 | 00000 |
| 10-24 | 7/32" | 0.085" to 0.135" | Hex | 0.223" | 0.363" | 0.210" | 0.344" | 0.043" | 25 | 000000000 | 0000 |
| 10-32 | 7/32" | 0.010" to 0.085" | Hex | 0.223" | 0.301" | 0.200" | 0.344" | 0.043" | 25 | 000000000 | 0000 |
| 10-32 | 7/32" | 0.085" to 0.135" | Hex | 0.223" | 0.363" | 0.210" | 0.344" | 0.043" | 25 | 000000000 | 0000 |
| 1/4"-20 | 19/64" | 0.020" to 0.085" | Hex | 0.296" | 0.363" | 0.250" | 0.437" | 0.043" | 25 | 000000000 | 0000 |
| 1/4"-20 | 19/64" | 0.085" to 0.145" | Hex | 0.296" | 0.426" | 0.250" | 0.437" | 0.043" | 10 | 000000000 | 0000 |
| 1/4"-20 | 23/64" | 0.138" to 0.236" | Hex | 0.354" | 0.756" | 0.354" | 0.511" | 0.059" | 25 | 000000000 | 0000 |
| 1/4"-20 | 23/64" | 0.236" to 0.335" | Hex | 0.354" | 0.854" | 0.354" | 0.511" | 0.059" | 25 | 000000000 | 0000 |
| 5/16"-18 | 3/8" | 0.030" to 0.105" | Hex | 0.368" | 0.514" | 0.375" | 0.562" | 0.048" | 10 | 000000000 | 0000 |
| 5/16"-18 | 3/8" | 0.105" to 0.175" | Hex | 0.368" | 0.592" | 0.380" | 0.562" | 0.048" | 10 | 000000000 | 0000 |
| 5/16"-18 | 3/8" | 0.175" to 0.245" | Hex | 0.368" | 0.655" | 0.375" | 0.562" | 0.048" | 10 | 000000000 | 0000 |
| 5/16"-18 | 7/16" | 0.157" to 0.276" | Hex | 0.432" | 0.897" | 0.535" | 0.63" | 0.059" | 10 | 000000000 | 0000 |
| 5/16"-18 | 7/16" | 0.276" to 0.394" | Hex | 0.432" | 1.02" | 0.535" | 0.63" | 0.059" | 10 | 000000000 | 0000 |
| 3/8"-16 | 7/16" | 0.104" to 0.239" | Hex | 0.437" | 0.698" | 0.410" | 0.656" | 0.058" | 10 | 000000000 | 0000 |
| 3/8"-16 | 33/64" | 0.039" to 0.177" | Hex | 0.511" | 0.91" | 0.689" | 0.748" | 0.079" | 10 | 000000000 | 0000 |
| 3/8"-16 | 33/64" | 0.177" to 0.295" | Hex | 0.511" | 1.01" | 0.689" | 0.748" | 0.079" | 10 | 000000000 | 0000 |
| 3/8"-16 | 33/64" | 0.295" to 0.413" | Hex | 0.511" | 1.14" | 0.689" | 0.748" | 0.079" | 10 | 000000000 | 0000 |
Thread | Body | Flange | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd. Across Flats, mm | For Material Thick., mm | Type | Dia., mm | Lg., mm | Installed Lg., mm | Dia., mm | Thick., mm | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||||||||
| M6 | 1 | 9 | 1.0 to 3.5 | Hex | 8.980 | 16.7 | 11.900 | 13 | 1.5 | 25 | 000000000 | 00000 |
| M6 | 1 | 9 | 3.5 to 6.0 | Hex | 8.980 | 19.2 | 11.900 | 13 | 1.5 | 25 | 000000000 | 00000 |
| M6 | 1 | 9 | 6.0 to 8.5 | Hex | 8.980 | 21.7 | 11.900 | 13 | 1.5 | 25 | 000000000 | 00000 |
| M8 | 1.25 | 11 | 0.8 to 4.0 | Hex | 10.980 | 19.6 | 13.600 | 16 | 1.5 | 10 | 000000000 | 0000 |
| M8 | 1.25 | 11 | 4.0 to 7.0 | Hex | 10.980 | 22.8 | 13.600 | 16 | 1.5 | 10 | 000000000 | 0000 |
| M8 | 1.25 | 11 | 7.0 to 10.0 | Hex | 10.980 | 26 | 13.600 | 16 | 1.5 | 10 | 000000000 | 0000 |
| M10 | 1.5 | 13 | 1.0 to 4.5 | Hex | 12.980 | 23.1 | 17.500 | 19 | 2 | 10 | 000000000 | 0000 |
| M10 | 1.5 | 13 | 4.5 to 7.5 | Hex | 12.980 | 25.6 | 17.500 | 19 | 2 | 10 | 000000000 | 0000 |
| M10 | 1.5 | 13 | 7.5 to 10.5 | Hex | 12.980 | 29.1 | 17.500 | 19 | 2 | 10 | 000000000 | 0000 |
Screw-Locking Heavy Duty Twist-Resistant Rivet Nuts
Irregularly shaped threads in these nuts form a tight grip, preventing screws from backing out in vibration-heavy environments. Our most twist-resistant rivet nuts, these hex-shaped nuts are held in place by their flat sides to keep them from spinning as you tighten screws. They're also among our strongest rivet nuts and hold up in heavy duty applications. Use these rivet nuts to create reusable threads in sheet metal and other surfaces that are too thin to be tapped. They’re also known as blind inserts—installation requires access to just one side of your material. The flange distributes the load and holds these nuts against the surface. Made of zinc-plated steel, they resist corrosion in wet environments.
Install in a hex-shaped punched hole with a rivet nut tool. The tool collapses the nut, creating a backside flange that holds the nut to the material. Screw-locking threads require high torque for fastening and unfastening, so you may need an impact wrench to remove screws.
Length is measured from under the flange. Installed length is the maximum length of the barrel when installed.
For technical drawings and 3-D models, click on a part number.
Body | Flange | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Wd. Across Flats | For Material Thick. | Type | Dia. | Lg. | Installed Lg. | Dia. | Thick. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | |||||||||||
| 1/4"-20 | 23/64" | 0.039" to 0.138" | Hex | 0.354" | 0.657" | 0.469" | 0.511" | 0.059" | 25 | 000000000 | 000000 |
| 1/4"-20 | 23/64" | 0.138" to 0.236" | Hex | 0.354" | 0.756" | 0.469" | 0.511" | 0.059" | 25 | 000000000 | 00000 |
| 1/4"-20 | 23/64" | 0.236" to 0.335" | Hex | 0.354" | 0.854" | 0.469" | 0.511" | 0.059" | 25 | 000000000 | 00000 |
| 5/16"-18 | 7/16" | 0.031" to 0.157" | Hex | 0.432" | 0.771" | 0.535" | 0.63" | 0.059" | 10 | 000000000 | 0000 |
| 5/16"-18 | 7/16" | 0.157" to 0.276" | Hex | 0.432" | 0.897" | 0.535" | 0.63" | 0.059" | 10 | 000000000 | 0000 |
| 3/8"-16 | 33/64" | 0.039" to 0.177" | Hex | 0.511" | 0.91" | 0.689" | 0.748" | 0.079" | 10 | 000000000 | 0000 |
| 3/8"-16 | 33/64" | 0.177" to 0.295" | Hex | 0.511" | 1.01" | 0.689" | 0.748" | 0.079" | 10 | 000000000 | 0000 |
Thread | Body | Flange | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Thread Pitch, mm | Wd. Across Flats | For Material Thick., mm | Type | Dia., mm | Lg., mm | Installed Lg., mm | Dia., mm | Thick., mm | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||||||||
| M6 | 1 | 9 mm | 1 to 3.5 | Hex | 8.98 | 16.7 | 11.9 | 13 | 1.5 | 25 | 000000000 | 000000 |
| M6 | 1 | 9 mm | 3.5 to 6 | Hex | 8.98 | 19.2 | 11.9 | 13 | 1.5 | 25 | 000000000 | 00000 |
| M8 | 1.25 | 11 mm | 0.8 to 4 | Hex | 10.98 | 19.6 | 13.6 | 16 | 1.5 | 10 | 000000000 | 0000 |
| M8 | 1.25 | 11 mm | 4 to 7 | Hex | 10.98 | 22.8 | 13.6 | 16 | 1.5 | 10 | 000000000 | 0000 |
| M10 | 1.5 | 13 mm | 1 to 4.5 | Hex | 12.98 | 23.1 | 17.5 | 19 | 2 | 10 | 000000000 | 0000 |
| M10 | 1.5 | 13 mm | 4.5 to 7.5 | Hex | 12.98 | 25.6 | 17.5 | 19 | 2 | 10 | 000000000 | 0000 |
Stainless Steel Heavy Duty Twist-Resistant Hex-Shaped Rivet Nuts
Ideal for wet and outdoor environments, these rivet nuts are made of stainless steel. Their hex-shaped body provides the highest twist resistance of any rivet nut. As you tighten screws, the flat sides hold them in place to keep them from spinning. They hold up in heavy duty applications because of their thick walls, making them some of our strongest rivet nuts. To install them, you only need access to one side of your sheet metal. The flange distributes the load and secures these nuts to the surface of your material.
Install them in a hex-shaped punched hole with a rivet nut tool. The tool collapses the nut, creating a backside flange that holds the nut to the material.
Length is measured from under the flange. Installed length is the maximum length of the barrel when installed.
18-8 stainless steel nuts stand up to mild chemicals and water.
316 stainless steel nuts have excellent corrosion resistance. They stand up to salt water and harsh chemicals.
For technical drawings and 3-D models, click on a part number.
Body | Flange | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Wd. Across Flats | For Material Thick. | Type | Dia. | Lg. | Installed Lg. | Dia. | Thick. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||||
| 5/16"-18 | 7/16" | 0.079" to 0.157" | Hex | 0.432" | 0.689" | 0.457" | 0.591" | 0.059" | 5 | 000000000 | 000000 |
Thread | Body | Flange | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd. Across Flats, mm | For Material Thick., mm | Type | Dia., mm | Lg., mm | Installed Lg., mm | Dia., mm | Thick., mm | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||||||
| M4 | 0.7 | 6 | 0.5 to 2 | Hex | 5.98 | 11 | 7.9 | 9 | 1 | 10 | 000000000 | 000000 |
| M5 | 0.8 | 7 | 0.5 to 3 | Hex | 6.98 | 11.5 | 7.3 | 10 | 1 | 10 | 000000000 | 00000 |
| M6 | 1 | 9 | 0.5 to 3 | Hex | 8.98 | 14.5 | 9.3 | 12 | 1.5 | 5 | 000000000 | 0000 |
| M8 | 1.25 | 11 | 0.5 to 3 | Hex | 10.98 | 16 | 11.1 | 15 | 1.5 | 5 | 000000000 | 0000 |
316 Stainless Steel | ||||||||||||
| M4 | 0.7 | 6 | 0.5 to 2 | Hex | 5.98 | 11 | 7.9 | 9 | 1 | 5 | 000000000 | 0000 |
| M5 | 0.8 | 7 | 0.5 to 3 | Hex | 6.98 | 11.5 | 7.3 | 10 | 1 | 5 | 000000000 | 0000 |
| M6 | 1 | 9 | 0.5 to 3 | Hex | 8.98 | 14.5 | 9.3 | 12 | 1.5 | 5 | 000000000 | 00000 |
| M8 | 1.25 | 11 | 0.5 to 3 | Hex | 10.98 | 16 | 11.1 | 15 | 1.5 | 5 | 000000000 | 00000 |