Part # SO4-440-8, Thru-Hole Threaded Standoffs for Installation into Stainless Steel - 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.

Types SO4 standoffs are for installation into stainless steel sheets as thin as .040”.

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

Specifications

Thread Size	N/A .112-40 (#4-40)
Thread Code	N/A 440
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 .166 in
B - Counter-Bore Dia. ± .005	N/A .125 in
C + .000 - .005	N/A .165 in
D ± 0.01	N/A 0 in
H Nom.	N/A .187 in
L - Length +.002 –.005¹	N/A .250 in
Min. Dist. Hole C/L to Edge²	N/A .23 in
For Use in Sheet Hardness³	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®)
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

Thread Size

Thread Code

Length Code

Material Code

Min. Sheet Thickness

Hole Size in Sheet + .003 - .000

B - Counter-Bore Dia. ± .005

C + .000 - .005

D ± 0.01

H Nom.

Thread Specification

Fastener Material

Standard Finish

CAD Supplier

Inventory