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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_1.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 –.0051 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 Edge2 N/A .23 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} N/A {0} N/A {0} N/A {0} 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.