Part # BSO-6440-20ZI, Blind Threaded Standoffs - Types BSO, BSOA, BSOS

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.

When blind-threaded types are used, outer sheet surfaces are not only flush, but c

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
C + .000 - .005	N/A .212 in
F Min.	N/A .250 in
H Nom.	N/A .250 in
L - Length +.002 –.005¹	N/A .625 in
Min. Dist. Hole C/L to Edge²	N/A .27 in
For Use in Sheet Hardness³	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®)
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

Min. Sheet Thickness

Hole Size in Sheet + .003 - .000

C + .000 - .005

F Min.

H Nom.

Thread Specification

Fastener Material

Standard Finish

CAD Supplier

Inventory