JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M90 x 3 Boring Bar Blank Finish drilled holes to ISO

Finish drilled holes to ISO H4 tolerance with this Toolex stub-type reamer in HSS-E (M35 cobalt)

Carbide (k10) construction: Intermediate precision carbide provides longer tool life and stable sizing for repeated reaming cycles

The 105mm length offers the reach needed for internal chamfers and edges tucked away in assemblies

and hard-to-reach features while maintaining rigid performance

ISO H5 tolerance with BS 328/4 standard: Delivers tight diameter control (-0 to +0

JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 6g - M90 x 3 Boring Bar Blank Finish drilled holes to ISOThe JBO Thread Ring Gauge (GO) Metric Fine Right Hand 6g M90 x 3 is a precision GO gauge designed to quickly verify external thread diameters on metric fine threads. Ideal for machinists, inspectors, and quality teams, it helps confirm parts meet the M90 x 3 specification and 6g tolerance with a simple go no go check. Made from hardened steel, it is built to withstand daily use in busy workshops. Its right hand, fine pitch geometry ensures reliable,