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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

1/2-13

Grip Range

.426 - .526 in

Identification Mark

3 Rad.

B Ref.

.906 in
a1058.jpg

C Max.

.124 in

øD + .000 - .004

.625 in

E Max.

.733 in

F + .005 -.000

.120 in

L ± .015

1.75 in

K Ref.

.635 in

P - Keyway Width + .003 -.000

.128 in

H - Keyway Height

.110 - .115 in

Install Drill Size Ref.

5/8

Install Hole Size Min.

.625 in

Install Hole Size Max.

.635 in

Pull Up Factor

.185 in

Weight per 1000

76.3 lb

Fastening

Uninstalled

Thread Specification

3B per ASME B1.1

Standard Material

300 Series Stainless Steel

Standard Finish

Passivated and/or tested per ASTM A380

CAD Supplier

PennEngineering® (Atlas®)