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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 1.02mm.

If you require a standoff which we do not offer in this bulletin, please contact us. We will be happy to work with you to satisfy your special need.
Unit of Measure

Thread Size x Pitch

 N/A M3 x 0.5

Thread Code

 N/A M3

Length Code

 N/A 4

Material Code

 N/A 4

Min. Sheet Thickness

 N/A 1.0 mm

Hole Size in Sheet + 0.08

 N/A 4.22 mm

B - Counter-Bore Dia. ± 0.13

 N/A 3.25 mm a1352.jpg

C - 0.13

 N/A 4.2 mm

D ± 0.25

 N/A 0 mm

H Nom.

 N/A 4.8 mm

L - Length +0.05 –0.13

 N/A 4 mm

Min. Dist. Hole C/L to Edge

 N/A 6.00 mm
For Use in Sheet Hardness1 N/A HRB 88 / HB 176 or Less

Thread Specification

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

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.