Part # SO4-43.1-18, Thru-Hole Unthreaded Standoffs - Type SO4

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.

Unit of Measure

Specifications

Thru-Hole Code	N/A 43.1
Length Code	N/A 18
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
C - 0.13	N/A 4.2 mm
H Nom.	N/A 4.8 mm
L - Length +0.05 –0.13¹	N/A 18 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}

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.

Specifications

Thru-Hole Code

Length Code

Min. Sheet Thickness

Hole Size in Sheet + 0.08

B - Thru-hole Diameter + 0.1 - 0.08

C - 0.13

H Nom.

Fastener Material

Standard Finish

CAD Supplier

Inventory