Nut Type Nut Type |
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Weld | Rivet Mount |
Material Material |
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Base Length Base Length |
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Base Width Base Width |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Specifications Met Specifications Met |
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Finish Finish |
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Lubrication Lubrication |
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About Nuts, Materials, and Finishes
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About Hex Head Screws and Bolts
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Aligning Weld Nuts

Threads float inside the retainer so you can install a bolt at a slight angle to align with off-center parts. Weld these nuts to materials for a strong permanent hold or punch holes in the flanges and secure them with rivets.
Weld zinc-plated steel nuts with aluminum retainer to aluminum parts.
Weld steel nuts with steel retainer to steel parts.
For technical drawings and 3-D models, click on a part number.
Base | |||||||
---|---|---|---|---|---|---|---|
Thread Size | Lg. | Wd. | Thick. | Ht. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel Nut with 5052 Aluminum Retainer | |||||||
10-32 | 1 1/2" | 1/2" | 3/64" | 11/32" | 10 | 000000000 | 000000 |
1/4"-20 | 1 3/4" | 9/16" | 1/16" | 7/16" | 10 | 000000000 | 00000 |
5/16"-18 | 2" | 25/32" | 1/16" | 33/64" | 10 | 000000000 | 00000 |
3/8"-16 | 2" | 25/32" | 1/16" | 33/64" | 5 | 000000000 | 00000 |
Steel Nut with C1008/C1010 Steel Retainer | |||||||
8-32 | 1 1/2" | 1/2" | 3/64" | 11/32" | 10 | 000000000 | 00000 |
10-24 | 1 1/2" | 1/2" | 3/64" | 11/32" | 10 | 000000000 | 00000 |
10-32 | 1 1/2" | 1/2" | 3/64" | 11/32" | 10 | 000000000 | 00000 |
1/4"-20 | 1 3/4" | 9/16" | 1/16" | 7/16" | 10 | 000000000 | 00000 |
1/4"-28 | 1 3/4" | 9/16" | 1/16" | 7/16" | 10 | 000000000 | 00000 |
5/16"-18 | 2" | 25/32" | 1/16" | 33/64" | 10 | 000000000 | 00000 |
5/16"-24 | 2" | 25/32" | 1/16" | 33/64" | 10 | 000000000 | 00000 |
3/8"-16 | 2" | 25/32" | 1/16" | 33/64" | 10 | 000000000 | 00000 |
3/8"-24 | 2" | 25/32" | 1/16" | 33/64" | 5 | 000000000 | 00000 |
1/2"-13 | 2 1/4" | 15/16" | 1/16" | 51/64" | 5 | 000000000 | 00000 |
Metric Aligning Weld Nuts

Threads float inside the retainer so you can install a bolt at a slight angle to align with off-center parts. Weld these nuts to uncoated steel for a strong permanent hold or punch holes in the flanges and secure them with rivets. The retainer is made from C1008-C1010 steel.
For technical drawings and 3-D models, click on a part number.
Mil. Spec. Rivet-Mount Nuts









Create threads in hard-to-work areas—where you can’t reach the back of a workpiece, or material is too thin to be tapped. For a strong grip, these nuts have distorted threads that increase friction with bolts. Because they mount with two rivets, they won’t spin when you’re tightening screws. However, these nuts do move inside their retainers, which lets you install bolts at a slight angle; use them to align with off-center parts. All meet military guidelines for dimensions and material.
Cadmium-plated nuts resist corrosion in industrial and saltwater environments, although will lose their corrosion resistance over 450° F. The cadmium plating also adds lubricity, making these nuts easy to install.
A286 stainless steel nuts are corrosion resistant. Silver-plated stainless steel nuts withstand temperatures up to 800° F. The silver plating also adds lubricity and prevents seizing caused by friction between nuts and bolts.
Lubricated nuts thread onto bolts smoothly.
For technical drawings and 3-D models, click on a part number.
Base | Barrel | Mounting | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Lg. | Wd. | Thick. | Dia. | Ht. | No. of Holes | Hole Dia. | Hole Ctr.-to-Ctr. | Specifications Met | Each | |
Steel—Unlubricated | |||||||||||
4-40 | 21/32" | 5/16" | 3/32" | 0.141" | 1/16" | 2 | 0.098" | 13/32" | MS21075-04N | 000000000 | 00000 |
6-32 | 11/16" | 11/32" | 3/32" | 0.156" | 5/64" | 2 | 0.098" | 7/16" | MS21075-06N | 000000000 | 0000 |
8-32 | 45/64" | 23/64" | 3/32" | 0.168" | 5/32" | 2 | 0.098" | 15/32" | MS21075-08N | 000000000 | 0000 |
10-32 | 47/64" | 13/32" | 3/32" | 0.194" | 5/32" | 2 | 0.098" | 1/2" | MS21075-3N | 000000000 | 0000 |
1/4"-28 | 51/64" | 1/2" | 3/32" | 0.254" | 3/16" | 2 | 0.098" | 9/16" | MS21075-4N | 000000000 | 0000 |
Cadmium-Plated Steel—Lubricated | |||||||||||
4-40 | 21/32" | 5/16" | 3/32" | 0.141" | 1/16" | 2 | 0.098" | 13/32" | MS21075L04N | 000000000 | 0000 |
6-32 | 11/16" | 11/32" | 3/32" | 0.156" | 5/64" | 2 | 0.098" | 7/16" | MS21075L06N | 000000000 | 0000 |
8-32 | 45/64" | 23/64" | 3/32" | 0.168" | 5/32" | 2 | 0.098" | 15/32" | MS21075L08N | 000000000 | 0000 |
10-32 | 47/64" | 13/32" | 3/32" | 0.194" | 5/32" | 2 | 0.098" | 1/2" | MS21075L3N | 000000000 | 0000 |
1/4"-28 | 51/64" | 1/2" | 3/32" | 0.254" | 3/16" | 2 | 0.098" | 9/16" | MS21075L4N | 000000000 | 0000 |
Carbon Steel—Unlubricated | |||||||||||
6-32 | 61/64" | 13/32" | 1/32" | 0.156" | 11/64" | 2 | 0.098" | 11/16" | MS21059-06 | 000000000 | 0000 |
8-32 | 61/64" | 13/32" | 1/32" | 0.168" | 7/32" | 2 | 0.098" | 11/16" | MS21059-08 | 000000000 | 0000 |
10-32 | 61/64" | 13/32" | 1/32" | 0.194" | 7/32" | 2 | 0.098" | 11/16" | MS21059-3 | 000000000 | 0000 |
1/4"-28 | 1 19/64" | 33/64" | 1/32" | 0.254" | 1/4" | 2 | 0.098" | 1" | MS21059-4 | 000000000 | 0000 |
5/16"-24 | 1 19/64" | 39/64" | 3/64" | 0.317" | 9/32" | 2 | 0.13" | 1" | MS21059-5 | 000000000 | 00000 |
Cadmium-Plated Carbon Steel—Lubricated | |||||||||||
4-40 | 61/64" | 13/32" | 1/32" | 0.141" | 9/64" | 2 | 0.098" | 11/16" | MS21059L04 | 000000000 | 0000 |
6-32 | 61/64" | 13/32" | 1/32" | 0.156" | 11/64" | 2 | 0.098" | 11/16" | MS21059L06 | 000000000 | 0000 |
8-32 | 61/64" | 13/32" | 1/32" | 0.168" | 7/32" | 2 | 0.098" | 11/16" | MS21059L08 | 000000000 | 0000 |
10-32 | 61/64" | 13/32" | 1/32" | 0.194" | 7/32" | 2 | 0.098" | 11/16" | MS21059L3 | 000000000 | 0000 |
1/4"-28 | 1 19/64" | 33/64" | 1/32" | 0.254" | 1/4" | 2 | 0.098" | 1" | MS21059L4 | 000000000 | 0000 |
5/16"-24 | 1 19/64" | 39/64" | 3/64" | 0.317" | 9/32" | 2 | 0.13" | 1" | MS21059L5 | 000000000 | 00000 |
3/8"-24 | 1 19/64" | 43/64" | 1/16" | 0.379" | 19/64" | 2 | 0.13" | 1" | MS21059L6 | 000000000 | 00000 |
A286 Stainless Steel—Lubricated | |||||||||||
4-40 | 21/32" | 5/16" | 3/32" | 0.141" | 1/16" | 2 | 0.098" | 13/32" | MS21076L04N | 000000000 | 00000 |
6-32 | 11/16" | 11/32" | 3/32" | 0.156" | 5/64" | 2 | 0.098" | 7/16" | MS21076L06N | 000000000 | 0000 |
6-32 | 61/64" | 13/32" | 1/32" | 0.156" | 11/64" | 2 | 0.098" | 11/16" | MS21060L06 | 000000000 | 0000 |
8-32 | 45/64" | 23/64" | 3/32" | 0.168" | 5/32" | 2 | 0.098" | 15/32" | MS21076L08N | 000000000 | 0000 |
8-32 | 61/64" | 13/32" | 1/32" | 0.168" | 7/32" | 2 | 0.098" | 11/16" | MS21060L08 | 000000000 | 0000 |
10-32 | 47/64" | 13/32" | 3/32" | 0.194" | 5/32" | 2 | 0.098" | 1/2" | MS21076L3N | 000000000 | 0000 |
10-32 | 61/64" | 13/32" | 1/32" | 0.194" | 7/32" | 2 | 0.098" | 11/16" | MS21060L3 | 000000000 | 0000 |
1/4"-28 | 51/64" | 1/2" | 3/32" | 0.254" | 3/16" | 2 | 0.098" | 9/16" | MS21076L4N | 000000000 | 0000 |
1/4"-28 | 1 19/64" | 33/64" | 1/32" | 0.254" | 1/4" | 2 | 0.098" | 1" | MS21060L4 | 000000000 | 0000 |
5/16"-24 | 1 1/64" | 37/64" | 7/64" | 0.317" | 7/32" | 2 | 0.13" | 23/32" | MS21076L5N | 000000000 | 00000 |
5/16"-24 | 1 19/64" | 39/64" | 3/64" | 0.317" | 9/32" | 2 | 0.13" | 1" | MS21060L5 | 000000000 | 00000 |
3/8"-24 | 1 19/64" | 43/64" | 1/16" | 0.379" | 19/64" | 2 | 0.13" | 1" | MS21060L6 | 000000000 | 00000 |
Silver-Plated A286 Stainless Steel—Unlubricated | |||||||||||
4-40 | 21/32" | 5/16" | 3/32" | 0.141" | 1/16" | 2 | 0.098" | 13/32" | MS21076-04N | 000000000 | 0000 |
6-32 | 61/64" | 13/32" | 1/32" | 0.156" | 11/64" | 2 | 0.098" | 11/16" | MS21060-06 | 000000000 | 0000 |
8-32 | 45/64" | 23/64" | 3/32" | 0.168" | 5/32" | 2 | 0.098" | 15/32" | MS21076-08N | 000000000 | 00000 |
10-32 | 47/64" | 13/32" | 3/32" | 0.194" | 5/32" | 2 | 0.098" | 1/2" | MS21076-3N | 000000000 | 0000 |
10-32 | 61/64" | 13/32" | 1/32" | 0.194" | 7/32" | 2 | 0.098" | 11/16" | MS21060-3 | 000000000 | 0000 |
1/4"-28 | 51/64" | 1/2" | 3/32" | 0.254" | 3/16" | 2 | 0.098" | 9/16" | MS21076-4N | 000000000 | 00000 |
1/4"-28 | 1 19/64" | 33/64" | 1/32" | 0.254" | 1/4" | 2 | 0.098" | 1" | MS21060-4 | 000000000 | 00000 |
5/16"-24 | 1 1/64" | 37/64" | 7/64" | 0.317" | 7/32" | 2 | 0.13" | 23/32" | MS21076-5N | 000000000 | 00000 |
Wire-Lockable Retainers for Hex Head Screws and Nuts

Place one of these retainers around a hex head screw or nut, and then attach wire to lock the screw or nut in place and keep it from loosening (wire sold separately).
For technical drawings and 3-D models, click on a part number.
Nut Retainers | Stainless Steel Wire | ||||||||||||
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For Screw Size | For Screw Head Wd. | For Nut Wd. | Wd. | Ht. | Hole Dia. | Material | Pkg. Qty. | Pkg. | Dia. | Lg., ft. | Each | ||
1/4" | 7/16" | 7/16" | 1/2" | 27/64" | 0.078" | Spring Steel | 10 | 000000000 | 000000 | 0.064" | 91 | 0000000 | 000000 |
5/16" | 1/2" | 1/2" | 9/16" | 15/32" | 0.099" | Spring Steel | 10 | 000000000 | 00000 | 0.081" | 57 | 0000000 | 00000 |
3/8" | 9/16" | 9/16" | 5/8" | 33/64" | 0.099" | Spring Steel | 10 | 000000000 | 00000 | 0.081" | 57 | 0000000 | 00000 |
1/2" | 3/4" | 3/4" | 13/16" | 19/32" | 0.099" | Spring Steel | 5 | 000000000 | 0000 | 0.081" | 57 | 0000000 | 00000 |
5/8" | 15/16" | 15/16" | 1" | 43/64" | 0.099" | Spring Steel | 5 | 000000000 | 00000 | 0.081" | 57 | 0000000 | 00000 |
3/4" | 1 1/8" | 1 1/8" | 1 3/16" | 3/4" | 0.099" | Spring Steel | 5 | 000000000 | 00000 | 0.081" | 57 | 0000000 | 00000 |
1" | 1 1/2" | 1 1/2" | 1 9/16" | 57/64" | 0.099" | Spring Steel | 1 | 000000000 | 0000 | 0.081" | 57 | 0000000 | 00000 |