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  • Designed for use in straight or tapered holes.
  • Symmetrical design eliminates the need for orientation.
  • Aluminum inserts ideal for light weight designs.
  • Aluminum and stainless steel inserts offer lead-free alternative.
Unit of Measure

Thread Size

N/A .086-56 (#2-56)


Thread Code1 N/A 256

A ± .005

N/A .157 in a1289.jpg

E ± .009

N/A .151 in

C ± .003

N/A .122 in

Min. Hole Depth

N/A .187 in

Hole Dia. +.003 -.000

N/A .126 in

Thread Specification

N/A 2B 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® (SI®)
  • 1 Thread tapped thru, Class 3A/4h screw must pass with finger torque, but basic go gauge may stop at last thread

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