Thread Size Thread Size |
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Nut Type Nut Type |
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| Weld | Press Fit |
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| Flange | Hex |
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| 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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Washer Material Washer Material |
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PEM® Part Number PEM® Part Number |
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Specifications Met Specifications Met |
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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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About Nuts, Materials, and Finishes
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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" | 0.125" | 1/16" | 2 | 0.098" | 13/32" | MS21075-04N | 000000000 | 00000 |
| 6-32 | 11/16" | 11/32" | 3/32" | 0.172" | 5/64" | 2 | 0.098" | 7/16" | MS21075-06N | 000000000 | 0000 |
| 8-32 | 45/64" | 23/64" | 3/32" | 0.203" | 5/32" | 2 | 0.098" | 15/32" | MS21075-08N | 000000000 | 0000 |
| 10-32 | 47/64" | 13/32" | 3/32" | 0.234" | 5/32" | 2 | 0.098" | 1/2" | MS21075-3N | 000000000 | 0000 |
| 1/4"-28 | 51/64" | 1/2" | 3/32" | 0.313" | 3/16" | 2 | 0.098" | 9/16" | MS21075-4N | 000000000 | 0000 |
Cadmium-Plated Steel—Lubricated | |||||||||||
| 4-40 | 21/32" | 5/16" | 3/32" | 0.125" | 1/16" | 2 | 0.098" | 13/32" | MS21075L04N | 000000000 | 0000 |
| 6-32 | 11/16" | 11/32" | 3/32" | 0.172" | 5/64" | 2 | 0.098" | 7/16" | MS21075L06N | 000000000 | 0000 |
| 8-32 | 45/64" | 23/64" | 3/32" | 0.203" | 5/32" | 2 | 0.098" | 15/32" | MS21075L08N | 000000000 | 0000 |
| 10-32 | 47/64" | 13/32" | 3/32" | 0.234" | 5/32" | 2 | 0.098" | 1/2" | MS21075L3N | 000000000 | 0000 |
| 1/4"-28 | 51/64" | 1/2" | 3/32" | 0.313" | 3/16" | 2 | 0.098" | 9/16" | MS21075L4N | 000000000 | 0000 |
Carbon Steel—Unlubricated | |||||||||||
| 6-32 | 61/64" | 13/32" | 1/32" | 0.172" | 11/64" | 2 | 0.098" | 11/16" | MS21059-06 | 000000000 | 0000 |
| 8-32 | 61/64" | 13/32" | 1/32" | 0.203" | 7/32" | 2 | 0.098" | 11/16" | MS21059-08 | 000000000 | 0000 |
| 10-32 | 61/64" | 13/32" | 1/32" | 0.234" | 7/32" | 2 | 0.098" | 11/16" | MS21059-3 | 000000000 | 0000 |
| 1/4"-28 | 1 19/64" | 33/64" | 1/32" | 0.313" | 1/4" | 2 | 0.098" | 1" | MS21059-4 | 000000000 | 0000 |
| 5/16"-24 | 1 19/64" | 39/64" | 3/64" | 0.375" | 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" | 0.172" | 11/64" | 2 | 0.098" | 11/16" | MS21059L06 | 000000000 | 0000 |
| 8-32 | 61/64" | 13/32" | 1/32" | 0.203" | 7/32" | 2 | 0.098" | 11/16" | MS21059L08 | 000000000 | 0000 |
| 10-32 | 61/64" | 13/32" | 1/32" | 0.234" | 7/32" | 2 | 0.098" | 11/16" | MS21059L3 | 000000000 | 0000 |
| 1/4"-28 | 1 19/64" | 33/64" | 1/32" | 0.313" | 1/4" | 2 | 0.098" | 1" | MS21059L4 | 000000000 | 0000 |
| 5/16"-24 | 1 19/64" | 39/64" | 3/64" | 0.375" | 9/32" | 2 | 0.13" | 1" | MS21059L5 | 000000000 | 00000 |
| 3/8"-24 | 1 19/64" | 43/64" | 1/16" | 0.453" | 19/64" | 2 | 0.13" | 1" | MS21059L6 | 000000000 | 00000 |
A286 Stainless Steel—Lubricated | |||||||||||
| 4-40 | 21/32" | 5/16" | 3/32" | 0.125" | 1/16" | 2 | 0.098" | 13/32" | MS21076L04N | 000000000 | 00000 |
| 6-32 | 11/16" | 11/32" | 3/32" | 0.172" | 5/64" | 2 | 0.098" | 7/16" | MS21076L06N | 000000000 | 0000 |
| 6-32 | 61/64" | 13/32" | 1/32" | 0.172" | 11/64" | 2 | 0.098" | 11/16" | MS21060L06 | 000000000 | 0000 |
| 8-32 | 45/64" | 23/64" | 3/32" | 0.203" | 5/32" | 2 | 0.098" | 15/32" | MS21076L08N | 000000000 | 0000 |
| 8-32 | 61/64" | 13/32" | 1/32" | 0.203" | 7/32" | 2 | 0.098" | 11/16" | MS21060L08 | 000000000 | 0000 |
| 10-32 | 47/64" | 13/32" | 3/32" | 0.234" | 5/32" | 2 | 0.098" | 1/2" | MS21076L3N | 000000000 | 0000 |
| 10-32 | 61/64" | 13/32" | 1/32" | 0.234" | 7/32" | 2 | 0.098" | 11/16" | MS21060L3 | 000000000 | 0000 |
| 1/4"-28 | 51/64" | 1/2" | 3/32" | 0.313" | 3/16" | 2 | 0.098" | 9/16" | MS21076L4N | 000000000 | 0000 |
| 1/4"-28 | 1 19/64" | 33/64" | 1/32" | 0.313" | 1/4" | 2 | 0.098" | 1" | MS21060L4 | 000000000 | 0000 |
| 5/16"-24 | 1 1/64" | 37/64" | 7/64" | 0.391" | 7/32" | 2 | 0.13" | 23/32" | MS21076L5N | 000000000 | 00000 |
| 5/16"-24 | 1 19/64" | 39/64" | 3/64" | 0.375" | 9/32" | 2 | 0.13" | 1" | MS21060L5 | 000000000 | 00000 |
| 3/8"-24 | 1 19/64" | 43/64" | 1/16" | 0.453" | 19/64" | 2 | 0.13" | 1" | MS21060L6 | 000000000 | 00000 |
Silver-Plated A286 Stainless Steel—Unlubricated | |||||||||||
| 4-40 | 21/32" | 5/16" | 3/32" | 0.125" | 1/16" | 2 | 0.098" | 13/32" | MS21076-04N | 000000000 | 0000 |
| 6-32 | 61/64" | 13/32" | 1/32" | 0.172" | 11/64" | 2 | 0.098" | 11/16" | MS21060-06 | 000000000 | 0000 |
| 8-32 | 45/64" | 23/64" | 3/32" | 0.203" | 5/32" | 2 | 0.098" | 15/32" | MS21076-08N | 000000000 | 00000 |
| 10-32 | 47/64" | 13/32" | 3/32" | 0.234" | 5/32" | 2 | 0.098" | 1/2" | MS21076-3N | 000000000 | 0000 |
| 10-32 | 61/64" | 13/32" | 1/32" | 0.234" | 7/32" | 2 | 0.098" | 11/16" | MS21060-3 | 000000000 | 0000 |
| 1/4"-28 | 51/64" | 1/2" | 3/32" | 0.313" | 3/16" | 2 | 0.098" | 9/16" | MS21076-4N | 000000000 | 00000 |
| 1/4"-28 | 1 19/64" | 33/64" | 1/32" | 0.313" | 1/4" | 2 | 0.098" | 1" | MS21060-4 | 000000000 | 00000 |
| 5/16"-24 | 1 1/64" | 37/64" | 7/64" | 0.391" | 7/32" | 2 | 0.13" | 23/32" | MS21076-5N | 000000000 | 00000 |
Stainless Steel Aligning Press-Fit Nuts for Sheet Metal
These nuts have good chemical resistance and may be mildly magnetic. They have threads that float within the body so you can install a bolt at a slight angle to align off-center parts. Knurls on the bottom of the nut hold them firmly in place. Press them into a drilled or punched hole with an installation tool or an arbor press. Installation requires access to both sides of the panel.
For technical drawings and 3-D models, click on a part number.
Head | Press-Fit Nuts | |||||||
|---|---|---|---|---|---|---|---|---|
| Thread Size | Drill Bit Size | For Min. Panel Thick. | OD | Ht. | PEM® Part No. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||
| 4-40 | L | 0.038" | 0.36" | 0.13" | AC-440-1 | 5 | 000000000 | 000000 |
| 4-40 | L | 0.054" | 0.36" | 0.13" | AC-440-2 | 5 | 000000000 | 0000 |
| 6-32 | 21/64" | 0.038" | 0.39" | 0.13" | AC-632-1 | 5 | 000000000 | 00000 |
| 6-32 | 21/64" | 0.054" | 0.39" | 0.13" | AC-632-2 | 5 | 000000000 | 0000 |
| 8-32 | U | 0.054" | 0.44" | 0.13" | AC-832-2 | 5 | 000000000 | 00000 |
| 10-24 | 13/32" | 0.054" | 0.47" | 0.17" | AC-024-2 | 1 | 000000000 | 0000 |
| 10-32 | 13/32" | 0.038" | 0.47" | 0.17" | AC-032-1 | 1 | 000000000 | 0000 |
| 10-32 | 13/32" | 0.054" | 0.47" | 0.17" | AC-032-2 | 5 | 000000000 | 00000 |
| 1/4"-20 | 33/64" | 0.054" | 0.6" | 0.21" | AC-0420-2 | 1 | 000000000 | 0000 |
| 1/4"-28 | 33/64" | 0.054" | 0.6" | 0.21" | AC-0428-2 | 1 | 000000000 | 0000 |
Thread | Head | Press-Fit Nuts | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Drill Bit Size | For Min. Panel Thick., mm | OD, mm | Ht., mm | PEM® Part No. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||
| M3 | 0.5 | 7.4 mm | 0.97 | 9.14 | 3.31 | AC-M3-1 | 5 | 000000000 | 00000 |
| M3 | 0.5 | 7.4 mm | 1.38 | 9.14 | 3.31 | AC-M3-2 | 1 | 000000000 | 0000 |
| M4 | 0.7 | 9.4 mm | 0.97 | 11.18 | 3.31 | AC-M4-1 | 1 | 000000000 | 0000 |
| M4 | 0.7 | 9.4 mm | 1.38 | 11.18 | 3.31 | AC-M4-2 | 1 | 000000000 | 0000 |
| M5 | 0.8 | 10.4 mm | 1.38 | 11.94 | 4.32 | AC-M5-2 | 1 | 000000000 | 0000 |
| M6 | 1 | 13.1 mm | 1.38 | 15.24 | 5.34 | AC-M6-2 | 1 | 000000000 | 0000 |
Steel Aligning Press-Fit Nuts for Sheet Metal
Threads float within the body so you can install a bolt at a slight angle to align off-center parts. These nuts have knurls on the bottom of the nut hold them firmly in place. Press them into a drilled or punched hole with an installation tool or an arbor press. Installation requires access to both sides of the panel. A zinc plating provides corrosion resistance in wet environments.
For technical drawings and 3-D models, click on a part number.
Head | Press-Fit Nuts | |||||||
|---|---|---|---|---|---|---|---|---|
| Thread Size | Drill Bit Size | For Min. Panel Thick. | OD | Ht. | PEM® Part No. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||||
| 4-40 | L | 0.054" | 0.36" | 0.13" | AS-440-2 | 5 | 000000000 | 00000 |
| 6-32 | 21/64" | 0.054" | 0.39" | 0.13" | AS-632-2 | 5 | 000000000 | 0000 |
| 8-32 | U | 0.054" | 0.44" | 0.13" | AS-832-2 | 5 | 000000000 | 0000 |
| 10-32 | 13/32" | 0.054" | 0.47" | 0.17" | AS-032-2 | 5 | 000000000 | 0000 |
| 1/4"-20 | 33/64" | 0.054" | 0.6" | 0.21" | AS-0420-2 | 5 | 000000000 | 00000 |
Steel Leveling Flange Nuts
Also known as spherical collar nuts, these nuts have a convex base that fits against a concave washer to fasten slightly uneven surfaces. They have a black-oxide finish for mild corrosion resistance in wet environments. Height includes the nut and the washer.
For technical drawings and 3-D models, click on a part number.
Flange | Washer | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Wd. | Ht. | Dia. | Thick. | Thick. | Material | Max. Correction | Each | |
Black-Oxide Steel | |||||||||
| 1/4"-20 | 1/2" | 7/16" | 5/8" | 0.09" | 1/8" | Steel | 2 1/2° | 000000000 | 00000 |
| 5/16"-18 | 9/16" | 17/32" | 3/4" | 0.13" | 5/32" | Steel | 1 1/2° | 000000000 | 0000 |
| 3/8"-16 | 11/16" | 21/32" | 7/8" | 0.13" | 5/32" | Steel | 1° | 000000000 | 0000 |
| 1/2"-13 | 7/8" | 7/8" | 1 1/8" | 0.19" | 3/16" | Steel | 1° | 000000000 | 0000 |
| 5/8"-11 | 1 1/16" | 1 1/32" | 1 3/8" | 0.19" | 7/32" | Steel | 1° | 000000000 | 0000 |
| 3/4"-10 | 1 1/4" | 1 17/64" | 1 5/8" | 0.25" | 17/64" | Steel | 1 1/2° | 000000000 | 0000 |
| 1"-8 | 1 5/8" | 1 35/64" | 2" | 0.25" | 19/64" | Steel | 1 1/2° | 000000000 | 00000 |
Stainless Steel Leveling Flange Nuts
These flange nuts have good chemical resistance. Also known as spherical collar nuts, they have a convex base that fits against a concave washer to fasten slightly uneven surfaces. Height includes the nut and the washer.
For technical drawings and 3-D models, click on a part number.
Flange | Washer | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Wd. | Ht. | Dia. | Thick. | Thick. | Material | Max. Correction | Each | |
18-8 Stainless Steel | |||||||||
| 1/4"-20 | 1/2" | 7/16" | 5/8" | 0.09" | 1/8" | 18-8 Stainless Steel | 2 1/2° | 000000000 | 000000 |
| 5/16"-18 | 9/16" | 17/32" | 3/4" | 0.09" | 11/64" | 18-8 Stainless Steel | 1 1/2° | 000000000 | 00000 |
| 3/8"-16 | 11/16" | 21/32" | 7/8" | 0.13" | 11/64" | 18-8 Stainless Steel | 1° | 000000000 | 00000 |
| 1/2"-13 | 7/8" | 7/8" | 1 1/8" | 0.16" | 7/32" | 18-8 Stainless Steel | 1° | 000000000 | 00000 |
| 5/8"-11 | 1 1/16" | 1 1/32" | 1 3/8" | 0.19" | 7/32" | 18-8 Stainless Steel | 1° | 000000000 | 00000 |
| 3/4"-10 | 1 1/4" | 1 17/64" | 1 5/8" | 0.25" | 1/4" | 18-8 Stainless Steel | 1 1/2° | 000000000 | 00000 |