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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.

When blind-threaded types are used, outer sheet surfaces are not only flush, but closed as well.

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.
Blind Threaded Standoffs - Types BSO, BSOA, BSOS
Blind Threaded Standoffs - Types BSO, BSOA, BSOS 2
Unit of Measure
Items Blind Threaded Standoffs - Types BSO, BSOA, BSOS
BSO-440-10ZI
Blind Threaded Standoffs - Types BSO, BSOA, BSOS - Unified
Blind Threaded Standoffs - Types BSO, BSOA, BSOS
BSO-440-12ZI
Blind Threaded Standoffs - Types BSO, BSOA, BSOS - Unified
Blind Threaded Standoffs - Types BSO, BSOA, BSOS
BSO-440-14ZI
Blind Threaded Standoffs - Types BSO, BSOA, BSOS - Unified
Blind Threaded Standoffs - Types BSO, BSOA, BSOS
BSO-440-16ZI
Blind Threaded Standoffs - Types BSO, BSOA, BSOS - Unified
Blind Threaded Standoffs - Types BSO, BSOA, BSOS
BSO-440-18ZI
Blind Threaded Standoffs - Types BSO, BSOA, BSOS - Unified
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.

When blind-threaded types are used, outer sheet surfaces are not only flush, but closed as well.

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.
Thread Size N/A .112-40 (#4-40)
Thread Code N/A 440
Length Code N/A 10 N/A 12 N/A 14 N/A 16 N/A 18
Material Code N/A
Min. Sheet Thickness N/A .040 in
Hole Size in Sheet + .003 - .000 N/A .166 in
C + .000 - .005 N/A .165 in a1351.jpg
F Min. N/A .156 in N/A .156 in N/A .187 in N/A .250 in N/A .250 in
H Nom. N/A .187 in
L - Length +.002 –.005 N/A .312 in N/A .375 in N/A .437 in N/A .500 in N/A .562 in
Min. Dist. Hole C/L to Edge N/A .23 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.