SwissTech 1/2"X13 UNC HSS-EV Blue Ring Spiral Point/Gun Nose Tap - DIN 371/376
Spiral Point/Gun Nose -
HSS-EV Oxidised Finish
UNC - Unified National Coarse
Bright Finish
Taper lead to DIN form B (3.5 x P to 5.5 x P)
Tapping tolerance to 2B
Manufactured to DIN 371/376
For through holes
Tapping tolerance to 6HX.