JBO Thread Ring Gauge (GO) - UNEF - Left Hand - 2A - 7/8 x 20 End Mill Holders Regular-length body with imperial 1/16"

Regular-length body with imperial 1/16" diameter for compatibility: The standard-length geometry and imperial sizing fit common milling setups

accurate bores and repeatable results across a variety of materials and applications

Material: HSS-E (M42 cobalt) for increased hardness and wear resistance

saving time during setup and reducing rework

this reamer is made from Intermediate HSS (M2) and finished to DIN 206-B with ISO H5 tolerance

JBO Thread Ring Gauge (GO) - UNEF - Left Hand - 2A - 7/8 x 20 End Mill Holders Regular-length body with imperial 1/16"The JBO Thread Ring Gauge (GO) for UNEF left hand threads (7 8 x 20, 2A class) is a precision inspection tool designed to quickly and reliably verify external thread diameters. It helps manufacturers, machinists, quality control teams, and maintenance technicians confirm that UNEF 7 8 x 20 left hand components meet the GO size and tolerance requirements. Crafted for durability in demanding environments, this ring gauge uses hardened steel construction