Tap for UNC Threads

	Type GG Form C ~DIN 371
Manufacturing specifications	Chamfer lead: form C Flute form: straight Thread: ground, with increased eccentric flank relief Other manufacturing specifications to DIN 2197.
Range of applications	For UNC-threads ANSI B 1.1 For through and blind holes in grey cast iron and hard plastics.
Sketch
Tool material
Cutting direction	right hand-cutting
Surface	nitrited
Ø-range	no. 2 - 3/8”
Tolerance	2B
Series No.	1979