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Left-hand spiral flute with straight shank: Provides controlled chip evacuation and stable alignment in typical reaming setups
durable taper
Its DIN 8093 specification and ISO H4 tolerance (D) ensure consistent bore size and reliable results across jobs
and reliable results across a range of materials commonly encountered in mold and die production
Metric Fine Thread Compatibility – M40 x 1
JBO Thread Ring Gauge (NoGo) - UNF - Left Hand - 2A - 1/4 x 28 G Left-hand spiral flute with straightThe JBO Thread Ring Gauge (NoGo) is a precision tool engineered to verify external UNF threads. Specifically sized for 1 4 x 28 left hand threads in the 2A class, it helps inspectors quickly determine whether a threaded component is within tolerance or out of spec. This No Go gauge is ideal for shops and QC labs that rely on fast, reliable pass fail checks. UNF Left Hand No Go verification: Quickly confirms non conforming threads to prevent improper
