Part # SO-6440-20ZI, Thru-hole Threaded Standoffs - Types SO, SOA, SOS

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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.

PEM® brand thru-hole threaded standoffs are installed with their heads flush with

Unit of Measure

Specifications

Thread Size	N/A .112-40 (#4-40)
Thread Code	N/A 6440
Length Code	N/A 20
Min. Sheet Thickness	N/A .040 in
Hole Size in Sheet + .003 - .000	N/A .213 in
B - Counter-Bore Dia. ± .005	N/A .125 in
C + .000 - .005	N/A .212 in
D ± .010	N/A .312 in
H Nom.	N/A .250 in
L - Length +.002 –.005	N/A .625 in
Min. Dist. Hole C/L to Edge	N/A .27 in
For Use in Sheet Hardness¹	N/A HRB 80 / HB 150 or less
Thread Specification	N/A Internal, ANSI B1.1, 2B
Fastener Material	N/A Heat-Treated Carbon Steel
Standard Finish	N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless
CAD Supplier	N/A PennEngineering® (PEM®)

¹ HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.

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Thread Size

Thread Code

Length Code

Min. Sheet Thickness

Hole Size in Sheet + .003 - .000

B - Counter-Bore Dia. ± .005

C + .000 - .005

D ± .010

H Nom.

L - Length +.002 –.005

Min. Dist. Hole C/L to Edge

Thread Specification

Fastener Material

Standard Finish

CAD Supplier

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