JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Right Hand - 6G - M39 x 4 Endmill25 it delivers consistent radii and

it delivers consistent radii and clean edges in tight spaces

05mm is a precision carbide-tipped reamer designed for finishing holes with consistent size control

It carries a tight DIN 212-B tolerance of D = 0 + 0

keeping tools securely held and reducing runout even under demanding cutting conditions

Durable M2 HSS with straight shank: Built for long tool life and compatibility with standard reaming setups

JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Right Hand - 6G - M39 x 4 Endmill25 it delivers consistent radii andJBO Thread Plug Gauge Metric Coarse Go No Go Right Hand 6G M39 x 4 is a precision inspection tool designed to verify internal threads in metric coarse sizes. This go no go plug gauge helps machinists, quality inspectors, and assembly technicians quickly confirm whether a threaded hole matches the intended M39 x 4 coarse thread, ensuring proper fitment of mating parts. Constructed from hardened steel and engineered for durability, this gauge withstands