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4-40 X 5/16" FLUSH HEX BLIND STANDOFFS - ZINC

Item No. BFBSO-440-10
BFBSO, BFBSOS, BFBSOA Press Nuts Available With Blind Threads.

Description

BFBSO, BFBSOS, BFBSOA Press Nuts Available With Blind Threads.

Specifications

D
0.165 (in)
Tol D
+0.000/-0.005 (in)
L
0.313 (in)
S
0.188 (in)
T
0.156 (in)
Depth
0.156 (in)
Family
BFBSO
Finish
Zinc Plated with Clear Chromate
Hole In Sheet
0.166 (in)
Tol Hole In Sheet
+0.003/-0.005 (in)
Length
0.313 (in)
Material
Carbon Steel, heat treated
Note
Maximum Recommended Panel Hardness: Rockwell B-80
Thread Size
#4-40
Threads
Unified Standard Class 2B MIL-S-7742
Unit System
Inch
Web Description
Flush Hex Clinching
Item No. BFBSO-440-10
* Images are of plain finish items unless otherwise specified

4-40 X 5/16" FLUSH HEX BLIND STANDOFFS - ZINC

Item No. BFBSO-440-10
FinishZinc Plated with Clear Chromate

Description

BFBSO, BFBSOS, BFBSOA Press Nuts Available With Blind Threads.

*3D models are nominal. As-formed features (radii, projections, lock marks, etc.) may vary. Please refer to the product drawing or spec sheet for exact dimensions.

*Please log in for pricing and availability

Specifications

D
0.165 (in)
Tol D
+0.000/-0.005 (in)
L
0.313 (in)
S
0.188 (in)
T
0.156 (in)
Depth
0.156 (in)
Family
BFBSO
Finish
Zinc Plated with Clear Chromate
Hole In Sheet
0.166 (in)
Tol Hole In Sheet
+0.003/-0.005 (in)
Length
0.313 (in)
Material
Carbon Steel, heat treated
Note
Maximum Recommended Panel Hardness: Rockwell B-80
Thread Size
#4-40
Threads
Unified Standard Class 2B MIL-S-7742
Unit System
Inch
Web Description
Flush Hex Clinching
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© Copyright 2026 Ohio Nut and Bolt of Canada, LTD.. All rights reserved. Powered by Sana Commerce.
Ohio Nut and Bolt of Canada, LTD.
A Wholly Owned Subsidiary of Fastener Industries, Inc.
Ohio Nut and Bolt of Canada, LTD.
C/O TX7027C
PO BOX 7027, STN Adelaide
Toronto, ON M5C 2K7 Canada

905-624-2828 
© Copyright 2026 Ohio Nut and Bolt of Canada, LTD.. All rights reserved. Powered by Sana Commerce.