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OEM Fastening Systems | Special Components & Fastening Systems
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  • Designed for high load applications. Countersunk feature allow fastener to be installed flush with sheet surface.
  • Both UNC and UNF threads available in No. 10 and larger thread sizes. Check for availability of other grip ranges and designs.
Unit of Measure

Thread Size

 N/A 1/4-20

Grip Range

 N/A .271 - .331 in

Identification Mark

 N/A 3 Rad.

B Ref.

 N/A .529 in a1058.jpg

C Max.

 N/A .089 in

øD + .000 - .004

 N/A .332 in

E Max.

 N/A .382 in

F + .005 -.000

 N/A .054 in

M Ref.

 N/A .435 in

Install Drill Size Ref.

 N/A Q

Install Hole Size Min.

 N/A .332 in

Install Hole Size Max.

 N/A .338 in

Pull Up Factor

 N/A .095 in

Weight per 1000

 N/A 11.9 lb

Fastening

 N/A Installed

Thread Specification

 N/A 3B per ASME B1.1

Standard Material

 N/A Alloy No. 260 Brass

Standard Finish

 N/A None - bright as machined

CAD Supplier

 N/A PennEngineering® (Atlas®)
AtlasAvdel
Aztech Delta PT
POPRolok
SEMSTaptite 2000
Swageform