• 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 #8-32

Grip Range

N/A 0.161 to 0.201 in

Identification Mark

N/A 4 Rad.

B Ref.

N/A 0.355 in a-1058.jpg

C Max.

N/A 0.063 in

øD + 0.000 - 0.004

N/A 0.221 in

E Max.

N/A 0.271 in

F + 0.005 - 0.000

N/A 0.054 in

L ± 0.015

N/A 0.687 in

K Ref.

N/A 0.255 in

Install Drill Size Ref.

N/A #2

Install Hole Size Min.

N/A 0.221 in

Install Hole Size Max.

N/A 0.226 in

Pull up Factor

N/A 0.065 in

Weight per 1000

N/A 4.4 lb


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®)

On Hand

N/A {0}