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Online literature contains the most current information available.
These standoffs, which use the proven self-clinching design, install with a squeeze in properly sized round holes - and become permanently mounted in the thin sheet.

Types SO4 standoffs are for installation into stainless steel sheets as thin as .0
Unit of Measure

Thread Size

N/A .112-40 (#4-40)

Thread Code

N/A 6440

Length Code

N/A 8

Material Code

N/A 4

Min. Sheet Thickness

N/A .040 in

Hole Size in Sheet + .003 - .000

N/A .213 in

B - Counter-Bore Dia. ± .005

N/A .125 in a1352.jpg

C + .000 - .005

N/A .212 in

D ± 0.01

N/A 0 in

H Nom.

N/A .250 in

L - Length +.002 –.005

N/A .250 in

Min. Dist. Hole C/L to Edge

N/A .28 in
For Use in Sheet Hardness1 N/A HRB 88 / HB 176 or Less

Thread Specification

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

Fastener Material

N/A 400 Series Stainless Steel

Standard Finish

N/A Passivated and/or tested per ASTM A380

CAD Supplier

N/A PennEngineering® (PEM®)
  • 1 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.