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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 3/8-16

Grip Range

 N/A .466 - .551 in

Identification Mark

 N/A 4 Rad.

B Ref.

 N/A .770 in a1058.jpg

C Max.

 N/A .124 in

øD + .000 - .004

 N/A .490 in

E Max.

 N/A .597 in

F + .005 -.000

 N/A .120 in

L ± .015

 N/A 1.75 in

K Ref.

 N/A .705 in

P - Keyway Width + .003 -.000

 N/A .128 in

H - Keyway Height

 N/A .110 - .115 in

Install Drill Size Ref.

 N/A 12.5mm

Install Hole Size Min.

 N/A .490 in

Install Hole Size Max.

 N/A .500 in

Pull Up Factor

 N/A .155 in

Weight per 1000

 N/A 49.5 lb

Fastening

 N/A Uninstalled

Thread Specification

 N/A 3B per ASME B1.1

Standard Material

 N/A 300 Series Stainless Steel

Standard Finish

 N/A Passivated and/or tested per ASTM A380

CAD Supplier

 N/A PennEngineering® (Atlas®)