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Metric Steel Press-Fit Nuts for Sheet Metal

Add permanent metric threads to sheet metal, like weld nuts, but without the setup and mess. A zinc plating on these steel press-fit nuts provides corrosion resistance in wet environments. 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.
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. | |
Zinc-Plated Steel | ||||||||||
Round Head | ||||||||||
M3.5 | 0.6 | 4.8 mm | 0.8 | Brinell 150, Rockwell B80 | 7.11 | 1.5 | S-M3.5-0ZI | 25 | 000000000 | 00000 |
M3.5 | 0.6 | 4.8 mm | 1 | Brinell 150, Rockwell B80 | 7.11 | 1.5 | S-M3.5-1ZI | 25 | 000000000 | 0000 |
M3.5 | 0.6 | 4.8 mm | 1.4 | Brinell 150, Rockwell B80 | 7.11 | 1.5 | S-M3.5-2ZI | 25 | 000000000 | 0000 |
Metric Stainless Steel Press-Fit Nuts for Sheet Metal

Made from 18-8 stainless steel, these metric nuts withstand contact with water and chemicals better than zinc-plated steel nuts. They 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.
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. | |
18-8 Stainless Steel | ||||||||||
Round Head | ||||||||||
M3.5 | 0.6 | 4.8 mm | 0.8 | Brinell 125, Rockwell B70 | 7.11 | 1.5 | CLS-M3.5-0 | 10 | 000000000 | 00000 |
M3.5 | 0.6 | 4.8 mm | 1 | Brinell 125, Rockwell B70 | 7.11 | 1.5 | CLS-M3.5-1 | 10 | 000000000 | 0000 |
M3.5 | 0.6 | 4.8 mm | 1.4 | Brinell 125, Rockwell B70 | 7.11 | 1.5 | CLS-M3.5-2 | 10 | 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.
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 | ||||||||||
M3.5 | 0.6 | 4.8 mm | 0.64 | Brinell 192, Rockwell B90 | 6.4 | 1.4 | SMPP-M3.5 | 10 | 000000000 | 00000 |
Aluminum Press-Fit Nuts for Sheet Metal

Add lightweight, corrosion-resistant threads to sheet metal. These aluminum press-fit nuts are one-third the weight of steel press-fit nuts and better withstand wet environments. However, they’re only about half as strong. Use press-fit nuts to add permanent threads to thin metal surfaces, 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.
Installation Tools for Press-Fit Nuts

Use these tools to install press-fit nuts by hand. They include one hand tool, seven hole punches and dies, five fastener anvils, one flat punch, one punch adapter bushing, and one edge-depth guide.
For Thread Size | Max. Force, lbs. | Wt., lbs. | Each | |
Metric | ||||
---|---|---|---|---|
M2, M2.5, M3, M3.5, M4, M5 | 2,500 | 2.75 | 000000000 | 0000000 |