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Type SMPP self-clinching nuts are for installation into ultra-thin sheets.
  • Installs into stainless steel sheets as thin as .025”.
  • Corrosion resistance similar to 300 series stainless steel.
  • Reduced outer dimensions and thinner sheet capabilities compared to type SP thread sizes.
  • Recommended for use in stainless steel sheets HRB 90 / HB 192 or less.
Unit of Measure

Thread Size

 N/A .138-32 (#6-32)

Thread Code

 N/A 632

A (Shank) Max.

 N/A .024 in a1383_1.jpg
Rec. Min. Sheet Thickness1 N/A .025 in

Hole Size in Sheet + .003 - .000

 N/A .187 in

C Max.

 N/A .186 in

E ± .010

 N/A .252 in

T ± .010

 N/A .065 in
Min. Dist. Hole C/L to Edge2 N/A .22 in
For Use in Sheet Hardness3 N/A HRB 90 / HB 192 or Less

Thread Specification

 N/A Internal, ASME B1.1, 2B

Fastener Material

 N/A Age hardened A286 Stainless Steel (non-magnetic)

Standard Finish

 N/A Passivated and/or tested per ASTM A380

CAD Supplier

 N/A PennEngineering® (PEM®)
  • 1 For maximum performance, we recommend that you use the maximum shank length for your sheet thickness.
  • 2 To minimize sheet distortion and maximize product performance, use a centerline-to-edge value greater or equal to the value specified.
  • 3 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.