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Online literature contains the most current information available.
  • 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 .125 - .211 in

Identification Mark

N/A Blank

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

J Ref.

N/A 1.020 in

K Ref.

N/A .655 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 13.9 lb


N/A Installed

Thread Specification

N/A 3B per ASME B1.1

Standard Material

N/A 6053 Aluminum or 6061 Aluminum

Standard Finish

N/A Anodized in accordance with MIL-A-8625, Type II, Class 1 plus lubricant

CAD Supplier

N/A PennEngineering® (Atlas®)