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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.

Unthreaded standoffs are also available for spacing multi-panel assemblies.
Thru-Hole Unthreaded Standoffs - Type SO4
Thru-Hole Unthreaded Standoffs - Types SO, SOA, SOS, SO4
Unit of Measure
Items Thru-Hole Unthreaded Standoffs - Type SO4
SO4-43.1-3
Thru-Hole Unthreaded Standoffs - Type SO4 - Metric
Thru-Hole Unthreaded Standoffs - Type SO4
SO4-43.1-4
Thru-Hole Unthreaded Standoffs - Type SO4 - Metric
Thru-Hole Unthreaded Standoffs - Type SO4
SO4-43.1-6
Thru-Hole Unthreaded Standoffs - Type SO4 - Metric
Thru-Hole Unthreaded Standoffs - Type SO4
SO4-43.1-8
Thru-Hole Unthreaded Standoffs - Type SO4 - Metric
Thru-Hole Unthreaded Standoffs - Type SO4
SO4-43.1-10
Thru-Hole Unthreaded Standoffs - Type SO4 - Metric
Description N/A 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.

Unthreaded standoffs are also available for spacing multi-panel assemblies.
Thru-Hole Code N/A 43.1
Length Code N/A 3 N/A 4 N/A 6 N/A 8 N/A 10
Material Code N/A
Min. Sheet Thickness N/A 1 mm
Hole Size in Sheet + 0.08 N/A 4.22 mm
B - Thru-hole Diameter + 0.1 - 0.08 N/A 3.1 mm a1350_1.jpg
C - 0.13 N/A 4.2 mm
H Nom. N/A 4.8 mm
L - Length +0.05 –0.131 N/A 3 mm N/A 4 mm N/A 6 mm N/A 8 mm N/A 10 mm
Min. Dist. Hole C/L to Edge2 N/A 6 mm
For Use in Sheet Hardness3 N/A HRB 88 / HB 183 or Less
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®)
Inventory N/A {0} N/A {0} N/A {0} N/A {0} N/A {0}
  • 1 The “L” dimension is the height of the installed stud at max grip. The height of the stud will increase if it is installed into thinner material. To calculate “actual L” use this formula: max grip - actual grip + L = “actual L”
  • 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.