JBO Thread Plug Gauge (NoGo) - Metric Coarse - Left Hand - 6H - M42 x 4.5 NCDC Drill Chuck accurate bore quality for demanding

accurate bore quality for demanding machining tasks

while the flute design supports efficient chip evacuation and reduces risk of clogging during finishing passes

and reliable performance across a range of metalworking tasks

Taper shank with DIN 8051 B tolerance and ISO H5 fit: Provides a secure

it provides a consistent

JBO Thread Plug Gauge (NoGo) - Metric Coarse - Left Hand - 6H - M42 x 4.5 NCDC Drill Chuck accurate bore quality for demandingThe JBO Thread Plug Gauge (NoGo) is a precision inspection tool designed to verify internal metric coarse threads. It is specifically sized for M42 x 4. 5 left hand threads and 6H tolerance, making it an ideal choice for machine shops, quality teams, and precision engineers who need reliable hole checks. Use it to confirm that threaded holes will accept fasteners and perform as intended in assemblies across automotive, industrial, and equipment