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About Nuts, Materials, and Finishes
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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 |
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.
Press-Fit Nuts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Head | Installation Tool | |||||||||
| Thread Size | Drill Bit Size | For Min. Panel Thick. | OD | Ht. | PEM® Part No. | Pkg. Qty. | Pkg. | Each | ||
Zinc-Plated Steel | ||||||||||
| 4-40 | L | 0.054" | 0.36" | 0.13" | AS-440-2 | 5 | 000000000 | 00000 | 000000000 | 0000000 |
| 6-32 | 21/64" | 0.054" | 0.39" | 0.13" | AS-632-2 | 5 | 000000000 | 0000 | 000000000 | 000000 |
| 8-32 | U | 0.054" | 0.44" | 0.13" | AS-832-2 | 5 | 000000000 | 0000 | 000000000 | 000000 |
| 10-32 | 13/32" | 0.054" | 0.47" | 0.17" | AS-032-2 | 5 | 000000000 | 0000 | 000000000 | 000000 |
| 1/4"-20 | 33/64" | 0.054" | 0.6" | 0.21" | AS-0420-2 | 5 | 000000000 | 00000 | 000000 | 00 |
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.
Press-Fit Nuts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Head | Installation Tool | |||||||||
| Thread Size | Drill Bit Size | For Min. Panel Thick. | OD | Ht. | PEM® Part No. | Pkg. Qty. | Pkg. | Each | ||
18-8 Stainless Steel | ||||||||||
| 4-40 | L | 0.038" | 0.36" | 0.13" | AC-440-1 | 5 | 000000000 | 00000 | 000000000 | 0000000 |
| 4-40 | L | 0.054" | 0.36" | 0.13" | AC-440-2 | 5 | 000000000 | 0000 | 000000000 | 000000 |
| 6-32 | 21/64" | 0.038" | 0.39" | 0.13" | AC-632-1 | 5 | 000000000 | 0000 | 000000000 | 000000 |
| 6-32 | 21/64" | 0.054" | 0.39" | 0.13" | AC-632-2 | 5 | 000000000 | 0000 | 000000000 | 000000 |
| 8-32 | U | 0.038" | 0.44" | 0.13" | AC-832-1 | 1 | 000000000 | 0000 | 000000000 | 000000 |
| 8-32 | U | 0.054" | 0.44" | 0.13" | AC-832-2 | 5 | 000000000 | 0000 | 000000000 | 000000 |
| 10-24 | 13/32" | 0.054" | 0.47" | 0.17" | AC-024-2 | 1 | 000000000 | 0000 | 000000000 | 000000 |
| 10-32 | 13/32" | 0.038" | 0.47" | 0.17" | AC-032-1 | 1 | 000000000 | 0000 | 000000000 | 000000 |
| 10-32 | 13/32" | 0.054" | 0.47" | 0.17" | AC-032-2 | 5 | 000000000 | 00000 | 000000000 | 000000 |
| 1/4"-20 | 33/64" | 0.054" | 0.6" | 0.21" | AC-0420-2 | 1 | 000000000 | 0000 | 000000 | 00 |
| 1/4"-28 | 33/64" | 0.054" | 0.6" | 0.21" | AC-0428-2 | 1 | 000000000 | 0000 | 000000 | 00 |
Press-Fit Nuts | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Thread | Head | Installation Tool | |||||||||
| Size | Pitch, mm | Drill Bit Size | For Min. Panel Thick., mm | OD, mm | Ht., mm | PEM® Part No. | Pkg. Qty. | Pkg. | Each | ||
18-8 Stainless Steel | |||||||||||
| M3 | 0.5 | 7.4 mm | 0.97 | 9.14 | 3.31 | AC-M3-1 | 5 | 000000000 | 00000 | 000000000 | 0000000 |
| M3 | 0.5 | 7.4 mm | 1.38 | 9.14 | 3.31 | AC-M3-2 | 1 | 000000000 | 0000 | 000000000 | 000000 |
| M4 | 0.7 | 9.4 mm | 0.97 | 11.18 | 3.31 | AC-M4-1 | 1 | 000000000 | 0000 | 000000000 | 000000 |
| M4 | 0.7 | 9.4 mm | 1.38 | 11.18 | 3.31 | AC-M4-2 | 1 | 000000000 | 0000 | 000000000 | 000000 |
| M5 | 0.8 | 10.4 mm | 1.38 | 11.94 | 4.32 | AC-M5-2 | 1 | 000000000 | 0000 | 000000000 | 000000 |
| M6 | 1 | 13.1 mm | 1.38 | 15.24 | 5.34 | AC-M6-2 | 1 | 000000000 | 0000 | 000000 | 00 |
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 | 0000 |
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 | 0000 |
| 10-32 | 1 1/2" | 1/2" | 3/64" | 11/32" | 10 | 000000000 | 0000 |
| 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.