JBO Thread Ring Gauge (GO) - Metric Coarse - Left Hand - 6g - M3 x 0.5 Face Mill Arbors With an industry-leading 5 micron

With an industry-leading 5 micron run-out

you can expect a defined processing window that supports your production planning

Toolex Reamer with a straight shank and high-speed steel construction delivers precise hole finishing for demanding machining tasks

Taper shank with BS 328/4 and standard length: Provides a secure fit in standard toolholders and a predictable reaming depth across jobs

it reams holes to ISO H4 tolerance in a straight-shank format

JBO Thread Ring Gauge (GO) - Metric Coarse - Left Hand - 6g - M3 x 0.5 Face Mill Arbors With an industry-leading 5 micronThe JBO Thread Ring Gauge (GO) for Metric Coarse threads is a precision inspection tool used to verify external threads on components. Designed for engineers, machinists, quality control teams, and workshop technicians, it helps confirm parts meet the exact size and thread form required. This left hand version is calibrated for M3 x 0. 5 coarse threads with a 6g tolerance. Built from hardened steel for durability in busy shops, it delivers consistent