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Flush-Mount Press-Fit Nuts for Sheet Metal
To fit in low-clearance areas, these press-fit nuts have a flat hex head that sits flush against the surface of your material. Made of 18-8 stainless steel, they withstand contact with water and chemicals better than zinc-plated steel nuts. Use them to add permanent threads to sheet metal like weld nuts but without the setup and mess. Also known as clinch-style captive nuts, press them into a drilled or punched hole with an arbor press or similar pressure tool. The pressure forms your sheet metal into the knurls of the nut, making the nut inseparable from the sheet. Installation requires access to both sides of the panel.
For technical drawings and 3-D models, click on a part number.
Flange | Press-Fit Nuts | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Thread Size | Drill Bit Size | For Min. Panel Thick. | For Max. Panel Hardness | Wd. | Thick. | Ht. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||
| 2-56 | No. 20 | 0.04" | Brinell 125, Rockwell B70 | 3/16" | 0.01" | 0.036" | 5 | 000000000 | 00000 |
| 2-56 | No. 20 | 0.062" | Brinell 125, Rockwell B70 | 3/16" | 0.02" | 0.058" | 5 | 000000000 | 0000 |
| 2-56 | No. 20 | 0.125" | Brinell 125, Rockwell B70 | 3/16" | 0.03" | 0.117" | 5 | 000000000 | 0000 |
| 4-40 | No. 20 | 0.04" | Brinell 125, Rockwell B70 | 3/16" | 0.01" | 0.036" | 25 | 000000000 | 00000 |
| 4-40 | No. 20 | 0.062" | Brinell 125, Rockwell B70 | 3/16" | 0.02" | 0.058" | 25 | 000000000 | 00000 |
| 4-40 | No. 20 | 0.125" | Brinell 125, Rockwell B70 | 3/16" | 0.03" | 0.117" | 10 | 000000000 | 00000 |
| 6-32 | 13/64" | 0.062" | Brinell 125, Rockwell B70 | 1/4" | 0.02" | 0.058" | 25 | 000000000 | 00000 |
| 6-32 | 13/64" | 0.125" | Brinell 125, Rockwell B70 | 1/4" | 0.03" | 0.117" | 25 | 000000000 | 00000 |
| 6-32 | 13/64" | 0.187" | Brinell 125, Rockwell B70 | 1/4" | 0.03" | 0.177" | 5 | 000000000 | 0000 |
| 8-32 | 17/64" | 0.062" | Brinell 125, Rockwell B70 | 5/16" | 0.02" | 0.058" | 25 | 000000000 | 00000 |
| 8-32 | 17/64" | 0.125" | Brinell 125, Rockwell B70 | 5/16" | 0.03" | 0.117" | 10 | 000000000 | 00000 |
| 8-32 | 17/64" | 0.187" | Brinell 125, Rockwell B70 | 5/16" | 0.03" | 0.177" | 5 | 000000000 | 0000 |
| 10-32 | 17/64" | 0.093" | Brinell 125, Rockwell B70 | 5/16" | 0.03" | 0.085" | 25 | 000000000 | 00000 |
| 10-32 | 17/64" | 0.125" | Brinell 125, Rockwell B70 | 5/16" | 0.03" | 0.117" | 25 | 000000000 | 00000 |
| 10-32 | 17/64" | 0.187" | Brinell 125, Rockwell B70 | 5/16" | 0.03" | 0.177" | 5 | 000000000 | 00000 |
| 1/4"-20 | W | 0.125" | Brinell 125, Rockwell B70 | 7/16" | 0.03" | 0.117" | 10 | 000000000 | 0000 |
| 1/4"-20 | W | 0.187" | Brinell 125, Rockwell B70 | 7/16" | 0.03" | 0.177" | 10 | 000000000 | 00000 |
| 1/4"-20 | W | 0.375" | Brinell 125, Rockwell B70 | 7/16" | 0.03" | 0.359" | 10 | 000000000 | 00000 |
Thread | Flange | Press-Fit Nuts | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Drill Bit Size | For Min. Panel Thick., mm | For Max. Panel Hardness | Wd., mm | Thick., mm | Ht., mm | PEM® Part Number | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||||
| M2 | 0.4 | 4.4 mm | 1.53 | Brinell 125, Rockwell B70 | 4.8 | 0.5 | 1.53 | F-M2-1 | 10 | 000000000 | 00000 |
| M2 | 0.4 | 4.4 mm | 2.3 | Brinell 125, Rockwell B70 | 4.8 | 0.6 | 2.3 | F-M2-2 | 10 | 000000000 | 0000 |
| M2.5 | 0.45 | 4.4 mm | 1.53 | Brinell 125, Rockwell B70 | 4.8 | 0.5 | 1.53 | F-M2.5-1 | 25 | 000000000 | 00000 |
| M2.5 | 0.45 | 4.4 mm | 2.3 | Brinell 125, Rockwell B70 | 4.8 | 0.6 | 2.3 | F-M2.5-2 | 10 | 000000000 | 0000 |
| M3 | 0.5 | 4.4 mm | 1.53 | Brinell 125, Rockwell B70 | 4.8 | 0.5 | 1.53 | F-M3-1 | 25 | 000000000 | 00000 |
| M3 | 0.5 | 4.4 mm | 2.32 | Brinell 125, Rockwell B70 | 4.8 | 0.6 | 2.3 | F-M3-2 | 25 | 000000000 | 00000 |
| M4 | 0.7 | 7.4 mm | 1.53 | Brinell 125, Rockwell B70 | 7.9 | 0.5 | 1.53 | F-M4-1 | 10 | 000000000 | 0000 |
| M4 | 0.7 | 7.4 mm | 2.32 | Brinell 125, Rockwell B70 | 7.9 | 0.6 | 2.3 | F-M4-2 | 10 | 000000000 | 0000 |
| M5 | 0.8 | 7.9 mm | 1.53 | Brinell 125, Rockwell B70 | 8.7 | 0.5 | 1.53 | F-M5-1 | 10 | 000000000 | 0000 |
| M5 | 0.8 | 7.9 mm | 2.32 | Brinell 125, Rockwell B70 | 8.7 | 0.6 | 2.3 | F-M5-2 | 10 | 000000000 | 0000 |
| M6 | 1 | 8.7 mm | 3.18 | Brinell 125, Rockwell B70 | 9.5 | 0.8 | 3.05 | F-M6-3 | 10 | 000000000 | 00000 |
| M6 | 1 | 8.7 mm | 3.96 | Brinell 125, Rockwell B70 | 9.5 | 1 | 3.84 | F-M6-4 | 10 | 000000000 | 00000 |
| M6 | 1 | 8.7 mm | 4.75 | Brinell 125, Rockwell B70 | 9.5 | 1.2 | 4.63 | F-M6-5 | 5 | 000000000 | 0000 |
High-Strength A286 Stainless Steel Press-Fit Nuts for Sheet Metal
The strongest and hardest press-fit nuts we offer. In addition to their sturdiness, these A286 stainless steel nuts withstand harsh chemicals. They add permanent threads to sheet metal, like weld nuts but without the setup and mess. Unlike most press-fit nuts, they’re even hard enough to install in stainless steel panels. Also known as clinch-style captive nuts, press them into a drilled or punched hole with an arbor press or similar pressure tool. The pressure forms your sheet metal into the knurls of the nut, making the nut inseparable from the sheet. Installation requires access to both sides of the panel.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Drill Bit Size | For Min. Panel Thick. | For Max. Panel Hardness | OD | Ht. | PEM® Part No. | Pkg. Qty. | Pkg. | |
A286 Stainless Steel | |||||||||
| 2-56 | 19 | 0.03" | Brinell 192, Rockwell B90 | 0.25" | 0.07" | SP-256-0 | 10 | 000000000 | 00000 |
| 2-56 | 19 | 0.04" | Brinell 192, Rockwell B90 | 0.25" | 0.07" | SP-256-1 | 10 | 000000000 | 0000 |
| 2-56 | 19 | 0.056" | Brinell 192, Rockwell B90 | 0.25" | 0.07" | SP-256-2 | 10 | 000000000 | 0000 |
| 4-40 | 19 | 0.03" | Brinell 192, Rockwell B90 | 0.25" | 0.07" | SP-440-0 | 10 | 000000000 | 0000 |
| 4-40 | 19 | 0.04" | Brinell 192, Rockwell B90 | 0.25" | 0.07" | SP-440-1 | 10 | 000000000 | 0000 |
| 4-40 | 19 | 0.056" | Brinell 192, Rockwell B90 | 0.25" | 0.07" | SP-440-2 | 10 | 000000000 | 0000 |
| 6-32 | 3/16" | 0.03" | Brinell 192, Rockwell B90 | 0.28" | 0.07" | SP-632-0 | 10 | 000000000 | 0000 |
| 6-32 | 3/16" | 0.04" | Brinell 192, Rockwell B90 | 0.28" | 0.07" | SP-632-1 | 10 | 000000000 | 0000 |
| 6-32 | 3/16" | 0.056" | Brinell 192, Rockwell B90 | 0.28" | 0.07" | SP-632-2 | 10 | 000000000 | 0000 |
| 8-32 | 3 | 0.03" | Brinell 192, Rockwell B90 | 0.31" | 0.09" | SP-832-0 | 5 | 000000000 | 0000 |
| 8-32 | 3 | 0.04" | Brinell 192, Rockwell B90 | 0.31" | 0.09" | SP-832-1 | 5 | 000000000 | 0000 |
| 8-32 | 3 | 0.056" | Brinell 192, Rockwell B90 | 0.31" | 0.09" | SP-832-2 | 5 | 000000000 | 0000 |
| 10-24 | 1/4" | 0.03" | Brinell 192, Rockwell B90 | 0.34" | 0.09" | SP-024-0 | 5 | 000000000 | 0000 |
| 10-24 | 1/4" | 0.04" | Brinell 192, Rockwell B90 | 0.34" | 0.09" | SP-024-1 | 5 | 000000000 | 0000 |
| 10-24 | 1/4" | 0.056" | Brinell 192, Rockwell B90 | 0.34" | 0.09" | SP-024-2 | 5 | 000000000 | 0000 |
| 10-32 | 1/4" | 0.03" | Brinell 192, Rockwell B90 | 0.34" | 0.09" | SP-032-0 | 5 | 000000000 | 0000 |
| 10-32 | 1/4" | 0.04" | Brinell 192, Rockwell B90 | 0.34" | 0.09" | SP-032-1 | 5 | 000000000 | 0000 |
| 10-32 | 1/4" | 0.056" | Brinell 192, Rockwell B90 | 0.34" | 0.09" | SP-032-2 | 5 | 000000000 | 0000 |
| 1/4"-20 | 11/32" | 0.047" | Brinell 192, Rockwell B90 | 0.44" | 0.17" | SP-0420-0 | 1 | 000000000 | 0000 |
| 1/4"-20 | 11/32" | 0.056" | Brinell 192, Rockwell B90 | 0.44" | 0.17" | SP-0420-1 | 1 | 000000000 | 0000 |
| 1/4"-20 | 11/32" | 0.09" | Brinell 192, Rockwell B90 | 0.44" | 0.17" | SP-0420-2 | 1 | 000000000 | 0000 |
| 5/16"-18 | Z | 0.056" | Brinell 192, Rockwell B90 | 0.5" | 0.23" | SP-0518-1 | 1 | 000000000 | 0000 |
| 5/16"-18 | Z | 0.09" | Brinell 192, Rockwell B90 | 0.5" | 0.23" | SP-0518-2 | 1 | 000000000 | 0000 |
| 3/8"-16 | 1/2" | 0.09" | Brinell 192, Rockwell B90 | 0.56" | 0.27" | SP-0616-1 | 1 | 000000000 | 0000 |
| 3/8"-16 | 1/2" | 0.125" | Brinell 192, Rockwell B90 | 0.56" | 0.27" | SP-0616-2 | 1 | 000000000 | 0000 |
Thread | Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Drill Bit Size | For Min. Panel Thick., mm | For Max. Panel Hardness | OD, mm | Ht., mm | PEM® Part No. | Pkg. Qty. | Pkg. | |
A286 Stainless Steel | ||||||||||
| M2 | 0.4 | 4.2 mm | 1 | Brinell 192, Rockwell B90 | 6.35 | 1.5 | SP-M2-1 | 5 | 000000000 | 00000 |
| M2 | 0.4 | 4.2 mm | 1.4 | Brinell 192, Rockwell B90 | 6.35 | 1.5 | SP-M2-2 | 5 | 000000000 | 0000 |
| M2.5 | 0.45 | 4.2 mm | 0.8 | Brinell 192, Rockwell B90 | 6.35 | 1.5 | SP-M2.5-0 | 5 | 000000000 | 0000 |
| M2.5 | 0.45 | 4.2 mm | 1 | Brinell 192, Rockwell B90 | 6.35 | 1.5 | SP-M2.5-1 | 5 | 000000000 | 0000 |
| M2.5 | 0.45 | 4.2 mm | 1.4 | Brinell 192, Rockwell B90 | 6.35 | 1.5 | SP-M2.5-2 | 5 | 000000000 | 0000 |
| M3 | 0.5 | 4.2 mm | 0.8 | Brinell 192, Rockwell B90 | 6.35 | 1.5 | SP-M3-0 | 10 | 000000000 | 0000 |
| M3 | 0.5 | 4.2 mm | 1 | Brinell 192, Rockwell B90 | 6.35 | 1.5 | SP-M3-1 | 10 | 000000000 | 0000 |
| M3 | 0.5 | 4.2 mm | 1.4 | Brinell 192, Rockwell B90 | 6.35 | 1.5 | SP-M3-2 | 10 | 000000000 | 0000 |
| M4 | 0.7 | 5.4 mm | 0.8 | Brinell 192, Rockwell B90 | 7.87 | 2 | SP-M4-0 | 5 | 000000000 | 0000 |
| M4 | 0.7 | 5.4 mm | 1 | Brinell 192, Rockwell B90 | 7.87 | 2 | SP-M4-1 | 5 | 000000000 | 0000 |
| M4 | 0.7 | 5.4 mm | 1.4 | Brinell 192, Rockwell B90 | 7.87 | 2 | SP-M4-2 | 5 | 000000000 | 0000 |
| M5 | 0.8 | 6.4 mm | 0.8 | Brinell 192, Rockwell B90 | 8.64 | 2 | SP-M5-0 | 5 | 000000000 | 0000 |
| M5 | 0.8 | 6.4 mm | 1 | Brinell 192, Rockwell B90 | 8.64 | 2 | SP-M5-1 | 5 | 000000000 | 0000 |
| M5 | 0.8 | 6.4 mm | 1.4 | Brinell 192, Rockwell B90 | 8.64 | 2 | SP-M5-2 | 5 | 000000000 | 0000 |
| M6 | 1 | 8.8 mm | 1.4 | Brinell 192, Rockwell B90 | 11.18 | 4.08 | SP-M6-1 | 1 | 000000000 | 0000 |
| M6 | 1 | 8.8 mm | 2.29 | Brinell 192, Rockwell B90 | 11.18 | 4.08 | SP-M6-2 | 1 | 000000000 | 0000 |
| M8 | 1.25 | 10.5 mm | 1.4 | Brinell 192, Rockwell B90 | 12.7 | 5.47 | SP-M8-1 | 1 | 000000000 | 0000 |
| M8 | 1.25 | 10.5 mm | 2.29 | Brinell 192, Rockwell B90 | 12.7 | 5.47 | SP-M8-2 | 1 | 000000000 | 0000 |
| M10 | 1.5 | 14 mm | 2.29 | Brinell 192, Rockwell B90 | 17.35 | 7.48 | SP-M10-1 | 1 | 000000000 | 0000 |
High-Strength Flush-Mount Press-Fit Nuts for Sheet Metal
Often used in low-clearance areas, these press-fit nuts have a flat hex head that sits flush with the surface of your material once they’re installed. Made from 400-series stainless steel, they add stronger threads to sheet metal than zinc-plated steel or 18-8 stainless steel nuts. However, they’re not as corrosion resistant as 18-8 stainless steel. Use them to add permanent threads to sheet metal like weld nuts but without the setup and mess. Also known as clinch-style captive nuts, press them into a drilled or punched hole with an arbor press or similar pressure tool. The pressure makes your sheet metal and the nut inseparable—the hex head sits flush with the sheet metal, which melds into the grooves of the nut. Installation requires access to both sides of the panel.
For technical drawings and 3-D models, click on a part number.
Flange | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Drill Bit Size | For Min. Panel Thick. | For Max. Panel Hardness | Wd. | Thick. | Ht. | PEM® Part No. | Pkg. Qty. | Pkg. | |
400 Series Stainless Steel | ||||||||||
| 2-56 | 11/64" | 0.06" | Brinell 180, Rockwell B85 | 3/16" | 0.02" | 0.06" | F4-256-1 | 10 | 000000000 | 00000 |
| 4-40 | 11/64" | 0.06" | Brinell 180, Rockwell B85 | 3/16" | 0.02" | 0.06" | F4-440-1 | 10 | 000000000 | 0000 |
| 4-40 | 11/64" | 0.091" | Brinell 180, Rockwell B85 | 3/16" | 0.02" | 0.09" | F4-440-2 | 10 | 000000000 | 0000 |
| 6-32 | 3 | 0.06" | Brinell 180, Rockwell B85 | 1/4" | 0.02" | 0.06" | F4-632-1 | 25 | 000000000 | 0000 |
| 6-32 | 3 | 0.091" | Brinell 180, Rockwell B85 | 1/4" | 0.02" | 0.09" | F4-632-2 | 25 | 000000000 | 0000 |
| 8-32 | L | 0.06" | Brinell 180, Rockwell B85 | 5/16" | 0.02" | 0.06" | F4-832-1 | 10 | 000000000 | 0000 |
| 8-32 | L | 0.091" | Brinell 180, Rockwell B85 | 5/16" | 0.02" | 0.09" | F4-832-2 | 10 | 000000000 | 0000 |
| 10-32 | 5/16" | 0.06" | Brinell 180, Rockwell B85 | 11/32" | 0.02" | 0.06" | F4-032-1 | 10 | 000000000 | 0000 |
| 10-32 | 5/16" | 0.091" | Brinell 180, Rockwell B85 | 11/32" | 0.02" | 0.09" | F4-032-2 | 10 | 000000000 | 0000 |
Thread | Flange | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Drill Bit Size | For Min. Panel Thick., mm | For Max. Panel Hardness | Wd., mm | Thick., mm | Ht., mm | PEM® Part No. | Pkg. Qty. | Pkg. | |
400 Series Stainless Steel | |||||||||||
| M2 | 0.4 | 4.4 mm | 1.53 | Brinell 180, Rockwell B85 | 4.8 | 0.5 | 1.53 | F4-M2-1 | 10 | 000000000 | 00000 |
| M2.5 | 0.45 | 4.4 mm | 1.53 | Brinell 180, Rockwell B85 | 4.8 | 0.5 | 1.53 | F4-M2.5-1 | 10 | 000000000 | 0000 |
| M2.5 | 0.45 | 4.4 mm | 2.32 | Brinell 180, Rockwell B85 | 4.8 | 0.6 | 2.3 | F4-M2.5-2 | 10 | 000000000 | 0000 |
| M3 | 0.5 | 4.4 mm | 1.53 | Brinell 180, Rockwell B85 | 4.8 | 0.5 | 1.53 | F-M3-1 | 10 | 000000000 | 0000 |
| M3 | 0.5 | 4.4 mm | 2.32 | Brinell 180, Rockwell B85 | 4.8 | 0.6 | 2.3 | F4-M3-2 | 10 | 000000000 | 0000 |
| M4 | 0.7 | 7.4 mm | 1.53 | Brinell 180, Rockwell B85 | 7.9 | 0.5 | 1.53 | F4-M4-1 | 10 | 000000000 | 0000 |
| M4 | 0.7 | 7.4 mm | 2.32 | Brinell 180, Rockwell B85 | 7.9 | 0.6 | 2.3 | F4-M4-2 | 10 | 000000000 | 0000 |
| M5 | 0.8 | 7.9 mm | 1.53 | Brinell 180, Rockwell B85 | 8.7 | 0.5 | 1.53 | F4-M5-1 | 10 | 000000000 | 0000 |
| M5 | 0.8 | 7.9 mm | 2.32 | Brinell 180, Rockwell B85 | 8.7 | 0.6 | 2.3 | F4-M5-2 | 10 | 000000000 | 0000 |