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  • Deformed threads lock screw in place to resist vibration.
  • Blind-end protects the threads from plastic intrusion.
  • Stainless steel inserts offer lead-free alternative.
Unit of Measure

Thread Size

 N/A .250-20 (1/4-20)

Type

 N/A IBLC

Thread Code

 N/A 0420

Length Code

 N/A 8

A ± .005

 N/A .625 in IBLC_Style1-and-Style2.jpg

H Min.

 N/A .415 in

E Nom.

 N/A .344 in

C ± .005

 N/A .325 in

S1 ± 0.005

 N/A .060 in

S2 ± 0.005

 N/A .060 in
Minor Dia.Min.1 N/A .197 in

Minor Dia.Max.

 N/A .207 in

First Cycle on Locking Torque Min.

 N/A 4.50 in·lb

First Cycle on Locking Torque Max.

 N/A 30.00 in·lb

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 Minor diameter may be below minimum in deformed thread area.