JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 4H - M28 x 1 Face Mill Arbors - Through Coolant HSS‑E (M35 cobalt) durability: Crafted

HSS‑E (M35 cobalt) durability: Crafted from cobalt‑enhanced high‑speed steel for improved wear resistance and hot hardness

enabling quick tool changes and seamless integration into existing machining workflows

and a robust coating translates to fewer tool changes

it’s a practical choice for precision machining

helping you avoid tool interference and maintain steady cutting depth

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 4H - M28 x 1 Face Mill Arbors - Through Coolant HSS‑E (M35 cobalt) durability: CraftedThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads, specifically tuned for M28 x 1. This right hand, 4H gauge is ideal for machinists, quality teams, and assembly technicians who need reliable thread verification to ensure parts fit together smoothly. Durable construction with hardened steel and a knurled grip delivers long lasting performance in busy workshops. The Go No Go design enables quick pass fail checks