OSG Threading Tap - Metric Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - M2 x 0.4 Spares with broad compatibility — built

with broad compatibility — built to work with the widely adopted ER50 family of collet chucks

back the tap out a quarter-turn to break and clear chips

it combines durability with heat resistance to handle demanding metalworking tasks

delivering precise 3/8" diameter threads at 16 TPI in the British Standard Whitworth (BSW) form with a right-hand orientation

Broad UNJ compatibility: Supports UNJ and the common variants UNJC

OSG Threading Tap - Metric Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - M2 x 0.4 Spares with broad compatibility — builtOSG Metric Spiral Flute Threading Tap is designed for precision threading in blind holes, built for machinists, hobbyists, and production shops that demand reliable, repeatable results on small parts. Crafted from cobaltenhanced HSS and finished with a steam oxide coating, this tap delivers durability and heat resistance for demanding metalworking tasks. Size: M2 x 0. 4 metric threading tailored for compact assemblies and fine thread applications.