E2866-40 UNF Machine Forming Tap, Oil Grooves

Thread forming tap with lube grooves with chamfer form C with a 2-3xP plug lead, for Unified National Fine thread UNF 6 with 40 TPI and 2BX class of fit, dimensions according to DIN 2184-1 standard with 4.0mm shank and 3.0mm square drive, cobalt based HSS-E with TiN coating for 3.5xD through or blind hole threading in steel and cast steel, stainless steel and wrought or cast aluminium