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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 1.
Unit of Measure

Thread Size x Pitch

M3 x 0.5

Thread Code

3.5M3

Length Code

18

Material Code

4

Min. Sheet Thickness

1.0 mm

Hole Size in Sheet + 0.08

5.41 mm

B - Counter-Bore Dia. ± 0.13

3.25 mm
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C - 0.13

5.39 mm

D ± 0.25

8.00 mm

H Nom.

6.4 mm

L - Length +0.05 –0.13

18 mm

Min. Dist. Hole C/L to Edge

6.8 mm
For Use in Sheet Hardness1 HRB 88 / HB 176 or Less

Thread Specification

Internal, ANSI/ASME B1.13M, 6H

Fastener Material

400 Series Stainless Steel

Standard Finish

Passivated and/or tested per ASTM A380

CAD Supplier

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