JBO Thread Ring Gauge (GO) - UNC - Left Hand - 2A - No. 6 x 32 ER Collet Chucks Grade & Coating: CR3 Ultra-Fine

Grade & Coating: CR3 Ultra-Fine carbide grade with a new generation PVD coating for high-hardness

accurate bore finish for repeatable results across multiple jobs

Shank Style: Long shank provides stability and accessibility in tight mold/die cavities

DIN 212-B style tolerance with H5 precision

JBO Thread Ring Gauge (GO) - UNC - Left Hand - 2A - No. 6 x 32 ER Collet Chucks Grade & Coating: CR3 Ultra-FineThe JBO Thread Ring Gauge (GO) for UNC Left Hand threads, No. 6 x 32, is a precision Go gauge designed to verify external thread diameters quickly and reliably. Its ideal for machine shops, manufacturers, and quality teams that need fast, repeatable thread checks as part of routine QC. Its simple, focused function helps inspectors confirm parts meet the exact UNC specification on every lot. Crafted from hardened steel for durability, this gauge