PennEngineering
PennEngineering
Corporate Headquarters – Danboro, PA
5190 Old Easton Rd.
Danboro, PA 18916
Phone: 215-766-8853
Toll-Free Phone: 1-800-237-4736 (U.S. only)
Email: info@pemnet.com
Website: www.pemnet.com
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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
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Part #

Thread Size x Pitch

Hole Size in Sheet + 0.08

C - 0.13

F Min.

H Nom.

L - Length +0.05 –0.13

Fastener Material

Standard Finish

CAD

BSO-M3.5-16ZI N/A M3.5 x 0.6 N/A 5.41 mm N/A 5.39 mm N/A 6.50 mm N/A 6.4 mm N/A 16 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M3.5-18ZI N/A M3.5 x 0.6 N/A 5.41 mm N/A 5.39 mm N/A 9.50 mm N/A 6.4 mm N/A 18 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M3.5-20ZI N/A M3.5 x 0.6 N/A 5.41 mm N/A 5.39 mm N/A 9.50 mm N/A 6.4 mm N/A 20 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M3.5-22ZI N/A M3.5 x 0.6 N/A 5.41 mm N/A 5.39 mm N/A 9.50 mm N/A 6.4 mm N/A 22 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M3.5-25ZI N/A M3.5 x 0.6 N/A 5.41 mm N/A 5.39 mm N/A 9.50 mm N/A 6.4 mm N/A 25.00 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M4-6ZI N/A M4 x 0.7 N/A 7.14 mm N/A 7.12 mm N/A 3.20 mm N/A 7.9 mm N/A 6 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M4-8ZI N/A M4 x 0.7 N/A 7.14 mm N/A 7.12 mm N/A 4.00 mm N/A 7.9 mm N/A 8 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M4-10ZI N/A M4 x 0.7 N/A 7.14 mm N/A 7.12 mm N/A 4.00 mm N/A 7.9 mm N/A 10 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M4-12ZI N/A M4 x 0.7 N/A 7.14 mm N/A 7.12 mm N/A 5.00 mm N/A 7.9 mm N/A 12.00 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M4-14ZI N/A M4 x 0.7 N/A 7.14 mm N/A 7.12 mm N/A 6.50 mm N/A 7.9 mm N/A 14 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M4-16ZI N/A M4 x 0.7 N/A 7.14 mm N/A 7.12 mm N/A 6.50 mm N/A 7.9 mm N/A 16 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M4-18ZI N/A M4 x 0.7 N/A 7.14 mm N/A 7.12 mm N/A 9.50 mm N/A 7.9 mm N/A 18 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M4-20ZI N/A M4 x 0.7 N/A 7.14 mm N/A 7.12 mm N/A 9.50 mm N/A 7.9 mm N/A 20 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M4-22ZI N/A M4 x 0.7 N/A 7.14 mm N/A 7.12 mm N/A 9.50 mm N/A 7.9 mm N/A 22 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M4-25ZI N/A M4 x 0.7 N/A 7.14 mm N/A 7.12 mm N/A 9.50 mm N/A 7.9 mm N/A 25.00 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M5-6ZI N/A M5 x 0.8 N/A 7.14 mm N/A 7.12 mm N/A 3.20 mm N/A 7.9 mm N/A 6 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M5-8ZI N/A M5 x 0.8 N/A 7.14 mm N/A 7.12 mm N/A 4.00 mm N/A 7.9 mm N/A 8 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M5-10ZI N/A M5 x 0.8 N/A 7.14 mm N/A 7.12 mm N/A 4.00 mm N/A 7.9 mm N/A 10 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M5-12ZI N/A M5 x 0.8 N/A 7.14 mm N/A 7.12 mm N/A 5.00 mm N/A 7.9 mm N/A 12.00 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M5-14ZI N/A M5 x 0.8 N/A 7.14 mm N/A 7.12 mm N/A 6.50 mm N/A 7.9 mm N/A 14 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M5-16ZI N/A M5 x 0.8 N/A 7.14 mm N/A 7.12 mm N/A 6.50 mm N/A 7.9 mm N/A 16 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M5-18ZI N/A M5 x 0.8 N/A 7.14 mm N/A 7.12 mm N/A 9.50 mm N/A 7.9 mm N/A 18 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M5-20ZI N/A M5 x 0.8 N/A 7.14 mm N/A 7.12 mm N/A 9.50 mm N/A 7.9 mm N/A 20 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M5-22ZI N/A M5 x 0.8 N/A 7.14 mm N/A 7.12 mm N/A 9.50 mm N/A 7.9 mm N/A 22 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
BSO-M5-25ZI N/A M5 x 0.8 N/A 7.14 mm N/A 7.12 mm N/A 9.50 mm N/A 7.9 mm N/A 25.00 mm N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
Unit of Measure
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