KOC-90°/120° Spot Drill for Aluminum

Commodity Brief

Recommended for spot drilling and hole-entry chamfering in aluminum alloys, copper and resin.
The DLC-coated design has two flutes and a 20° helix. Its 90° or 120° point establishes the starting location for drilling and can also produce the corresponding hole-entry angle.
⌀3–16 mm; 16 sizes.

Carbon steel	Alloy steel	Pre-hardened steel	Stainless steel	Aluminum alloy	Copper	Resin	Graphite	Hard and brittle materials	Heat-resistant alloys	Workpiece Hardness
Carbon steel	Alloy steel	Pre-hardened steel	Stainless steel	Aluminum alloy	Copper	Resin	Graphite	Hard and brittle materials	Heat-resistant alloys	50HRC	55HRC	62HRC
○	○	○	○	◎	◎	◎

Code No. KOC	(θ˚) Taper Angle	(D) Dia.	(h) Length of Cut	(t) Number of Flutes	(Y) Shank Taper Angle	(d) Shank Dia.	(L) Overall Length
3-030-90	90	3	8	2	-	3	50
4-040-90	90	4	10	2	-	4	50
5-050-90	90	5	13	2	-	5	50
6-060-90	90	6	15	2	-	6	50
8-080-90	90	8	20	2	-	8	60
10-100-90	90	10	25	2	-	10	75
12-120-90	90	12	30	2	-	12	75
16-160-90	90	16	40	2	-	16	100
3-030-120	120	3	8	2	-	3	50
4-040-120	120	4	10	2	-	4	50
5-050-120	120	5	13	2	-	5	50
6-060-120	120	6	15	2	-	6	50
8-080-120	120	8	20	2	-	8	60
10-100-120	120	10	25	2	-	10	75
12-120-120	120	12	30	2	-	12	75
16-160-120	120	16	40	2	-	16	100