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Online literature contains the most current information available.
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 .086-56 (#2-56)

Thread Code

N/A 256

A (Shank) Max.

N/A .024 in a1384.jpg

Min. Sheet Thickness

N/A .025 in

Hole Size in Sheet + .003 - .000

N/A .136 in

C Max.

N/A .135 in

E ± .010

N/A .220 in

T ± .010

N/A .065 in

Min. Dist. Hole C/L to Edge

N/A .160 in

For Use in Sheet Hardness

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®)