EX20 1/2 masinakeermeotsik

Spiral fuse tap, model C, threading chamfer length 2-3xP, UN coarse thread UNC 1/2", 13 TPI, 2B tolerance class, measurements according to standard DIN 2184-1, 9.0 mm shank, 7.0 mm square drive, powder metallurgical HSS-E, bright, 45° helix angle, 2.5xD for deep blind hole threads, for carbon and unalloyed carbon steel, drawn or cast aluminium