Carmex Vertical Milling CMT Three Flute Insert - Threading - C18I4TRMT7 ER Mini Collet Chucks M138 x 2 is a

M138 x 2 is a precision tool designed to verify external thread diameters on fasteners

and engineering tasks—from simple pilot threads to the most demanding jobs

56 mm with DIN 8051 B tolerance and ISO H5 accuracy

while its precise cutting edges and point geometry help produce clean

and quality-focused fabrication environments where hole quality matters

Carmex Vertical Milling CMT Three Flute Insert - Threading - C18I4TRMT7 ER Mini Collet Chucks M138 x 2 is aThe Carmex Vertical Milling CMT Three Flute Insert for Threading is an indexable cutting insert designed for vertical milling, enabling threads, grooves, and chamfers with precision. Built for engineers, buyers, tradespeople, and hobbyists, this solution emphasizes high precision threading and reliable performance. Ground profile inserts in the CMT Vertical Mill Thread line deliver excellent results at higher machining parameters and a smooth surface