• Designed for high load applications. Available with rib, key or full hex features for high torque applications.
  • Both UNC and UNF threads available in No. 10 and larger thread sizes. Check for availability of other grip ranges and designs.

Thread Size

 1/4-20

Identification Mark

 2 Rad.

Install Drill Size Ref.

 Q

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®)