Countersink Bits - .25" Hex Shank

HSS 1/4” Hex Drive 90° Countersinks - Wiha 786

High quality HSS steel, ground with radial relief. 1/4” Hex shank according to DIN 3126 C 6.3.

Size	Inch	Length (inch)	Screw Size	Part #
6.3	0.26	1.38	M3	78615
8.3	0.33	1.38	M4	78617
10.4	0.41	1.38	M5	78619
12.4	0.49	1.38	M6	78621
16.5	0.65	1.38	M8	78622
20.5	0.81	1.38	M10	78624