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Self-clinching nuts are installed by placing them in properly sized holes in sheets and applying a parallel squeezing force to the head of the nut. The sheet metal surrounding the head cold flows into an undercut thereby making the fastener an integral part of the sheet. A serrated clinching ring prevents the fastener from rotating after installation.

Type S, SS, CLS, and CLSS nuts provide load-bearing threads in thin sheets with high pushout and torque-out resistance.

Type SP, PEM 300® nuts provide strong load-bearing threads in stainless steel sheets as thin as .030”.
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Nuts - Types S, SS, CLS, CLSS,CLA,SP

Self-Clinching Nuts - Types S, SS, CLS, CLSS, SP - Unified
Nuts - Types S, SS, CLS, CLSS,CLA,SP

Self-Clinching Nuts - Types S, SS, CLS, CLSS, SP - Unified
Nuts - Types S, SS, CLS, CLSS,CLA,SP

Self-Clinching Nuts - Types S, SS, CLS, CLSS, SP - Unified
Nuts - Types S, SS, CLS, CLSS,CLA,SP

Self-Clinching Nuts - Types S, SS, CLS, CLSS, SP - Unified
Nuts - Types S, SS, CLS, CLSS,CLA,SP

Self-Clinching Nuts - Types S, SS, CLS, CLSS, SP - Unified
Description N/A Type SP, PEM 300® nuts provide strong load-bearing threads in stainless steel sheets as thin as .030”.

Type SP is recommended for use in stainless steel sheets HRB (Rockwell "B" scale) 90 or less and HB (Hardness Brinell) 185 or less.
Thread Size N/A .112-40 (#4-40) N/A .138-32 (#6-32) N/A .164-32 (#8-32) N/A .190-32 (#10-32) N/A .250-20 (1/4-20)
Thread Code N/A 440 N/A 632 N/A 832 N/A 032 N/A 0420
Shank Code1 N/A 0
A (Shank) Max. N/A .030 in a1383_1.jpg N/A .030 in a1383_1.jpg N/A .030 in a1383_1.jpg N/A .030 in a1383_1.jpg N/A .045 in a1383_1.jpg
Rec. Min. Sheet Thickness2 N/A .030 in N/A .030 in N/A .030 in N/A .030 in N/A .047 in
Hole Size in Sheet + .003 - .000 N/A .166 in N/A .1875 in N/A .213 in N/A .250 in N/A .344 in
C Max. N/A .165 in N/A .187 in N/A .212 in N/A .249 in N/A .343 in
E ± .010 N/A .250 in N/A .280 in N/A .310 in N/A .340 in N/A .440 in
T ± .010 N/A .070 in N/A .070 in N/A .090 in N/A .090 in N/A .170 in
Min. Dist. Hole C/L to Edge3 N/A .19 in N/A .22 in N/A .27 in N/A .28 in N/A .34 in
For Use in Sheet Hardness4 N/A HRB 90 / HB 185 or Less
Thread Specification N/A Internal, ASME B1.1, 2B
Fastener Material N/A Age Hardened A286 Stainless Steel
Standard Finish N/A Passivated and/or tested per ASTM A380
CAD Supplier N/A PennEngineering® (PEM®)
Inventory N/A {0} N/A {0} N/A {0} N/A {0} N/A {0}
  • 1 Other shank and screw lengths available.
  • 2 For maximum performance, we recommend that you use the maximum shank length for your sheet thickness.
  • 3 To minimize sheet distortion and maximize product performance, use a centerline-to-edge value greater or equal to the value specified.
  • 4 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.