Insize Thread Plug Gage 5/16-18 UNC Class 2B Series 4643-5D1 150x110x70 mm ABS Plastic IP65 Waterproof Junction Box and pneumatic applications where DOT-certified

and pneumatic applications where DOT-certified components are required for safety and performance

3" Calibration rod

A precision vernier caliper designed for reliable measurement of internal

and wood across workshop

Insize Thread Plug Gage 5/16-18 UNC Class 2B Series 4643-5D1 150x110x70 mm ABS Plastic IP65 Waterproof Junction Box and pneumatic applications where DOT-certifiedInsize Thread Plug Gage 5 16 18 UNC Class 2B Series 4643 5D1 The Insize 4643 5D1 Thread Plug Gage is engineered for precise inspection of 5 16 18 UNC internal threads, Class 2B. It complies with ANSI B1. 2 standards and features both GO and NOGO members for accurate gauging. Made from OHNS steel hardened to HRC6062, this gage provides durability and wear resistance. Supplied with a manufacturer's inspection certificate for guaranteed quality.