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Drills / 403

Solid Carbide Twister® GP, NC Spotting Drill

Designed for accurate spotting on NC machines. Short lengths and no body clearance make this a very rigid tool. Easy to repoint - no web taper. Can be used at higher speeds and feeds, compatible with other carbide tooling.

2 Flutes
Solid carbide
No margin
3X+ Stub length
Uncoated, coating available upon request
120° Point
21° Helix

Materials

Series Attributes

Downloads

Speed and Feed Data

Drill Technical Data

Tolerance Chart

Series 403 Catalog Pages

Line Drawing

Product Range

	Tool No.	EDP	Diameter (D/D1)	Diameter Dec	Shank Diameter (D2)	Overall Length (L1)	Flute Length (L2)	Coating	Shank Type

.1875	40318750	40301	3/16	.1875	3/16	2	1	Uncoated	Straight
.1875	40318750A	76305	3/16	.1875	3/16	2	1	ALtima®	Straight
.1968	40319680	40305	5mm	.1968	5mm	51mm	26mm	Uncoated	Straight
.2362	40323620	40309	6mm	.2362	6mm	51mm	26mm	Uncoated	Straight
.2362	40323620A	19948	6mm	.2362	6mm	51mm	26mm	ALtima®	Straight
.2500	40325000	40313	1/4	.2500	1/4	2	1	Uncoated	Straight
.3125	40331250	40317	5/16	.3125	5/16	2-1/2	1	Uncoated	Straight
.3125	40331250A	78050	5/16	.3125	5/16	2-1/2	1	ALtima®	Straight
.3150	40331500	40321	8mm	.3150	8mm	64mm	26mm	Uncoated	Straight
.3750	40337500	40325	3/8	.3750	3/8	2-1/2	1	Uncoated	Straight
.3750	40337500A	78052	3/8	.3750	3/8	2-1/2	1	ALtima®	Straight
.3937	40339370	40329	10mm	.3937	10mm	70mm	30mm	Uncoated	Straight
.4724	40347240	40333	12mm	.4724	12mm	76mm	39.5mm	Uncoated	Straight
.5000	40350000	40337	1/2	.5000	1/2	3	1-9/16	Uncoated	Straight
.5000	40350000A	76306	1/2	.5000	1/2	3	1-9/16	ALtima®	Straight