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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 5/16-18

Grip Range

N/A .331 - .406 in

Identification Mark

N/A 3 Rad.

A ± .015

N/A 1.093 in

B Ref.

N/A .656 in a1058_1.jpg

C Max.

N/A .104 in

øD + .000 - .004

N/A .413 in

E Max.

N/A .505 in

F + .005 -.000

N/A .120 in

P - Keyway Width + .003 -.000

N/A .128 in

H - Keyway Height

N/A .097 - .102 in

Install Drill Size Ref.

N/A Z

Install Hole Size Min.

N/A .413 in

Install Hole Size Max.

N/A .423 in

Pull Up Factor

N/A .120 in

Weight

N/A 21.5 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®)

Inventory

N/A {0}