DIN 340 Drill Bits | McMaster-Carr

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71 Products

About Drill Bits

Compare material, finish, length class, and decimal size equivalents.

High-Speed Steel Drill Bits


Extended Length Round Shank	Standard

Our basic drill bits are also the most versatile. Cut holes in a variety of metals, from the softest aluminum to the hardest steel.

Extended Length—Drill through panels and thick workpieces with our longest bits. Their length is good for creating deep holes but makes them less rigid than other bits. As a result, they are more prone to wobbling or breaking, especially when drilling hard materials.

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.

Uncoated—The most economical option, uncoated bits perform best when used on low-carbon steel and aluminum. Polished to reduce friction, they're also known as bright finish bits.

					Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Type	Size	Drill Bit Point Type	Mfr.		Each
Extended Length







				Black Oxide

				1.0	0.0394"	56	33	Round	1 mm	Standard	Dormer Pramet	88455A111	00000


				2.0	0.0787"	85	56	Round	2 mm	Standard	Dormer Pramet	88455A114	0000
				2.4	0.0945"	95	62	Round	2.4 mm	Standard	Dormer Pramet	88455A116	00000
				2.5	0.0984"	95	62	Round	2.5 mm	Standard	Dormer Pramet	29315A311	00000
				2.5	0.0984"	160	95	Round	2.5 mm	Standard	Dormer Pramet	88455A36	00000
				2.8	0.1102"	100	66	Round	2.8 mm	Standard	Dormer Pramet	88455A117	0000
				3.0	0.1181"	100	66	Round	3 mm	Standard	Dormer Pramet	29315A312	00000
				3.0	0.1181"	160	94	Round	3 mm	Standard	Dormer Pramet	88455A37	00000
				3.0	0.1181"	200	144	Round	3 mm	Standard	Dormer Pramet	88455A57	00000
				3.3	0.1299"	160	93.4	Round	3.3 mm	Standard	Dormer Pramet	88455A38	00000
				3.5	0.1378"	160	92.9	Round	3.5 mm	Standard	Dormer Pramet	88455A39	00000


				4.0	0.1575"	160	91.9	Round	4 mm	Standard	Dormer Pramet	88455A42	00000
				4.0	0.1575"	200	141.9	Round	4 mm	Standard	Dormer Pramet	88455A62	00000
				4.0	0.1575"	315	241.9	Round	4 mm	Standard	Dormer Pramet	88455A72	00000
				4.2	0.1654"	119	78	Round	4.2 mm	Standard	Dormer Pramet	88455A118	00000
				5.0	0.1969"	132	87	Round	5 mm	Standard	Dormer Pramet	29315A313	00000
				5.0	0.1969"	160	89.9	Round	5 mm	Standard	Dormer Pramet	88455A44	00000
				5.0	0.1969"	200	139.9	Round	5 mm	Standard	Dormer Pramet	88455A64	00000
				5.0	0.1969"	315	239.9	Round	5 mm	Standard	Dormer Pramet	88455A74	00000
				5.5	0.2165"	200	139	Round	5.5 mm	Standard	Dormer Pramet	88455A65	00000
				5.8	0.2283"	139	91	Round	5.8 mm	Standard	Dormer Pramet	88455A119	00000


				5.9	0.2323"	139	91	Round	5.9 mm	Standard	Dormer Pramet	88455A121	00000
				6.0	0.2362"	200	138	Round	6 mm	Standard	Dormer Pramet	88455A66	00000
				6.0	0.2362"	315	238	Round	6 mm	Standard	Dormer Pramet	88455A76	00000
				6.3	0.248"	148	97	Round	6.3 mm	Standard	Dormer Pramet	88455A122	00000
				6.5	0.2559"	200	136.9	Round	6.5 mm	Standard	Dormer Pramet	88455A67	00000
				6.5	0.2559"	315	236.9	Round	6.5 mm	Standard	Dormer Pramet	88455A77	000000
				6.8	0.2677"	156	102	Round	6.8 mm	Standard	Dormer Pramet	88455A123	00000
				7.0	0.2756"	200	135.9	Round	7 mm	Standard	Dormer Pramet	88455A68	00000
				7.5	0.2953"	200	134.9	Round	7.5 mm	Standard	Dormer Pramet	88455A69	00000
				8.0	0.315"	315	233.9	Round	8 mm	Standard	Dormer Pramet	88455A81	00000


				8.5	0.3346"	165	109	Round	8.5 mm	Standard	Dormer Pramet	88455A124	00000
				9.0	0.3543"	175	115	Round	9 mm	Standard	Dormer Pramet	88455A125	00000
				10.0	0.3937"	315	229.9	Round	10 mm	Standard	Dormer Pramet	88455A85	000000
				10.2	0.4016"	184	121	Round	10.2 mm	Standard	Dormer Pramet	88455A126	00000
				10.5	0.4134"	184	121	Round	10.5 mm	Standard	Dormer Pramet	88455A127	00000
				11.0	0.4331"	195	128	Round	11 mm	Standard	Dormer Pramet	88455A128	00000
				12.0	0.4724"	315	226	Round	12 mm	Standard	Dormer Pramet	88455A88	000000
				12.5	0.4921"	205	134	Round	12.5 mm	Standard	Dormer Pramet	88455A131	00000
				13.0	0.5118"	205	134	Round	13 mm	Standard	Dormer Pramet	88455A132	00000
				15.0	0.5906"	220	144	Round	15 mm	Standard	Dormer Pramet	88455A134	00000


				16.0	0.6299"	227	149	Round	16 mm	Standard	Dormer Pramet	88455A135	00000
				17.0	0.6693"	235	154	Round	17 mm	Standard	Dormer Pramet	88455A136	00000
				18.0	0.7087"	241	158	Round	18 mm	Standard	Dormer Pramet	88455A137	00000
				20.0	0.7874"	254	166	Round	20 mm	Standard	Dormer Pramet	88455A138	000000




				Uncoated

		1.0	0.0394"	56	30.9	Round	1 mm	Standard	Dormer Pramet	3083A111	0000


		1.25	0.0492"	65	41	Round	1.25 mm	Standard	Dormer Pramet	2939A86	0000
		1.5	0.0591"	70	42.2	Round	1.5 mm	Standard	Dormer Pramet	3083A116	0000
		2.0	0.0787"	85	52.3	Round	2 mm	Standard	Dormer Pramet	3083A122	0000
		2.0	0.0787"	160	96	Round	2 mm	Standard	Dormer Pramet	88455A34	00000
		2.5	0.0984"	95	56.9	Round	2.5 mm	Standard	Dormer Pramet	3083A128	0000
		3.0	0.1181"	100	59.8	Round	3 mm	Standard	Dormer Pramet	3083A133	0000
		3.3	0.1299"	106	62.4	Round	3.3 mm	Standard	Dormer Pramet	3083A136	0000
		3.5	0.1378"	112	66	Round	3.5 mm	Standard	Dormer Pramet	3083A138	0000
		4.0	0.1575"	119	69.7	Round	4 mm	Standard	Dormer Pramet	3083A144	0000
		4.2	0.1654"	119	69.3	Round	4.2 mm	Standard	Dormer Pramet	3083A146	0000


		4.5	0.1772"	126	72.7	Round	4.5 mm	Standard	Dormer Pramet	3083A149	0000
		5.0	0.1969"	132	77.3	Round	5 mm	Standard	Dormer Pramet	3083A155	0000
		5.5	0.2165"	139	80.2	Round	5.5 mm	Standard	Dormer Pramet	3083A159	00000
		6.0	0.2362"	139	79.2	Round	6 mm	Standard	Dormer Pramet	3083A165	00000
		6.5	0.2559"	148	83.8	Round	6.5 mm	Standard	Dormer Pramet	3083A169	00000
		6.8	0.2677"	156	88.7	Round	6.8 mm	Standard	Dormer Pramet	3083A171	00000
		7.0	0.2756"	156	88.3	Round	7 mm	Standard	Dormer Pramet	3083A172	00000
		8.0	0.315"	165	92.7	Round	8 mm	Standard	Dormer Pramet	3083A176	00000
		8.5	0.3346"	165	91.7	Round	8.5 mm	Standard	Dormer Pramet	3083A178	00000
		9.0	0.3543"	175	97	Round	9 mm	Standard	Dormer Pramet	3083A182	00000


		10.0	0.3937"	184	100.6	Round	10 mm	Standard	Dormer Pramet	3083A186	00000
		13.0	0.5118"	205	108.1	Round	13 mm	Standard	Dormer Pramet	3083A199	00000
		14.0	0.5512"	214	111.6	Round	14 mm	Standard	Dormer Pramet	3083A204	00000
		15.0	0.5906"	220	114.4	Round	15 mm	Standard	Dormer Pramet	3083A209	00000
		16.0	0.6299"	227	117.2	Round	16 mm	Standard	Dormer Pramet	3083A212	00000