Metric Machine Screws, Tap Drills Table

This table is the chart for publication of information of metric machine screws, along with tap and clearance drill information. The information available from our sources is usually sufficient for all computer related drill or screw requirements world wide.

Screw Size				Tapping Drills			Clearance Drills
Nom. Dia. (mm)	Pitch (mm)	Series		Drill Size (65-75% thread)	Dec. Equiv.		Close Fit		Free Fit
							Drill Size	Dec. Equiv.	Drill Size	Dec. Equiv.
1	0.20	Fine	0.80	0.0315	1.05	0.0413	1.20	0.0472
	0.25	Coarse	0.75	0.0295
1.1	0.20	Fine	0.90	0.0354	1.15	0.0453	1.30	0.0512
	0.25	Coarse	0.85	0.0335
1.2	0.20	Fine	1.00	0.0394	1.30	0.0512	1.50	0.0590
	0.25	Coarse	0.95	0.0374
1.4	0.20	Fine	1.20	0.0472	1.50	0.0591	1.70	0.0669
	0.30	Coarse	1.10	0.0433
1.6	0.20	Fine	1.40	0.0551	1.70	0.0669	2.00	0.0787
	0.35	Coarse	1.25	0.0492
1.8	0.20	Fine	1.60	0.0630	1.90	0.0748	2.20	0.0866
	0.35	Coarse	1.45	0.0571
2	0.25	Fine	1.75	0.0689	2.20	0.0866	2.60	0.1024
	0.40	Coarse	1.60	0.0630
2.2	0.25	Fine	1.95	0.0768	2.40	0.0945	2.80	0.1102
	0.45	Coarse	1.75	0.0689
2.5	0.35	Fine	2.15	0.0846	2.70	0.1063	3.10	0.1220
	0.45	Coarse	2.05	0.0807
3	0.35	Fine	2.65	0.1043	3.20	0.1260	3.60	0.1417
	0.50	Coarse	2.50	0.0984
3.5	0.35	Fine	3.15	0.1240	3.70	0.1457	4.20	0.1653
	0.60	Coarse	2.90	0.1142
4	0.50	Fine	3.50	0.1378	4.30	0.1693	4.80	0.1890
	0.70	Coarse	3.30	0.1299
4.5	0.50	Fine	4.00	0.1575	4.80	0.1890	5.30	0.2087
	0.75	Coarse	3.70	0.1457
5	0.50	Fine	4.50	0.1772	5.30	0.2087	5.80	0.2283
	0.80	Coarse	4.20	0.1654
6	0.75	Fine	5.25	0.2067	6.40	0.2520	7.00	0.2756
	1.00	Coarse	5.00	0.1969
7	0.75	Fine	6.25	0.2461	7.40	0.2913	8.00	0.3150
	1.00	Coarse	6.00	0.2362
8	0.75	Fine	7.25	0.2854	8.40	0.3307	10.00	0.3937
	1.00	Fine	7.50	0.2953
	1.25	Coarse	6.80	0.2677
9	0.75	Fine	8.25	0.3248	9.50	0.3740	10.50	0.4134
	1.00	Fine	8.00	0.3150
	1.25	Coarse	7.80	0.3071
10	0.75	Fine	9.25	0.3642	10.50	0.4134	12.00	0.4724
	1.00	Fine	9.00	0.3543
	1.25	Fine	8.80	0.3465
	1.50	Coarse	8.50	0.3346
11	0.75	Fine	10.25	0.4035	12.00	0.4724	13.00	0.5118
	1.00	Fine	10.00	0.3937
	1.50	Coarse	9.50	0.3740
12	1.00	Fine	11.00	0.4331	13.00	0.5118	15.00	0.5905
	1.25	Fine	10.75	0.4232
	1.50	Fine	10.50	0.4134
	1.75	Coarse	10.20	0.4016
14	1.00	Fine	13.00	0.5118	15.00	0.5905	17.00	.6693
	1.25	Fine	12.80	0.5039
	1.50	Fine	12.50	0.4921
	2.00	Coarse	12.00	0.4724
15	1.00	Fine	14.00	0.5512	16.00	0.6299	18.00	0.7087
	1.50	Fine	13.50	0.5315
16	1.00	Fine	15.00	0.5906	17.00	0.6693	19.00	0.7480
	1.50	Fine	14.50	0.5709
	2.00	Coarse	14.00	0.5512
17	1.00	Fine	16.00	0.6299	18.00	0.7087	20.00	0.7874
	1.50	Fine	15.50	0.6103
18	1.00	Fine	17.00	0.6693	19.00	0.7480	21.00	0.8268
	1.50	Fine	16.50	0.6496
	2.00	Fine	16.00	0.6299
	2.50	Coarse	15.50	0.6102
20	1.00	Fine	19.00	0.7480	21.00	0.8268	24.00	0.9449
	1.50	Fine	18.50	0.7283
	2.00	Fine	18.00	0.7087
	2.50	Coarse	17.50	0.6890
22	1.00	Fine	21.00	0.8268	23.00	0.9055	26.00	1.0236
	1.50	Fine	20.50	0.8071
	2.00	Fine	20.00	0.7874
	2.50	Coarse	19.50	0.7677
24	1.00	Fine	23.00	0.9055	25.00	0.9842	28.00	1.1024
	1.50	Fine	22.50	0.8858
	2.00	Fine	22.00	0.8661
	3.00	Coarse	21.00	0.8268
25	1.00	Fine	24.00	0.9449	26.00	1.0236	30.00	1.1811
	1.50	Fine	23.50	0.9252
	2.00	Fine	23.00	0.9055
26	1.50	Fine	24.50	0.9646
27	1.00	Fine	26.00	1.0236	28.00	1.1024	32.00	1.2598
	1.50	Fine	25.50	1.0039
	2.00	Fine	25.00	0.9843
	3.00	Coarse	24.00	0.9449
28	1.00	Fine	27.00	1.0630
	1.50	Fine	26.50	1.0433
	2.00	Fine	26.00	1.0236
30	1.00	Fine	29.00	1.1417	31.00	1.2205	35.00	1.3779
	1.50	Fine	28.50	1.1220
	2.00	Fine	28.00	1.1024
	3.00	Fine	27.00	1.0630
	3.50	Coarse	26.50	1.0433
32	1.50	Fine	30.50	1.2008
	2.00	Fine	30.00	1.1811
33	1.50	Fine	31.50	1.2402	34.00	1.3386	38.00	1.4961
	2.00	Fine	31.00	1.2205
	3.00	Fine	30.00	1.1811
	3.50	Coarse	29.50	1.1614
35	1.50	Fine	33.50	1.3189
	2.00	Fine	33.00	1.2992
36	1.50	Fine	34.50	1.3583	37.00	1.4567	42.00	1.6535
	2.00	Fine	34.00	1.3386
	3.00	Fine	33.00	1.2992
	4.00	Coarse	32.00	1.2598
39	1.50	Fine	37.50	1.4764	40.00	1.5748	45.00	1.7716
	2.00	Fine	37.00	1.4567
	3.00	Fine	36.00	1.4173
	4.00	Coarse	35.00	1.3780
40	1.50	Fine	38.50	1.5157
	2.00	Fine	38.00	1.4961
	3.00	Fine	37.00	1.4567
42	1.50	Fine	40.50	1.5945	43.00	1.6929	48.00	1.8898
	2.00	Fine	40.00	1.5748
	3.00	Fine	39.00	1.5354
	4.00	Fine	38.00	1.4961
	4.50	Coarse	37.50	1.4764
45	1.50	Fine	43.50	1.7126	46.00	1.8110	52.00	2.0472
	2.00	Fine	43.00	1.6929
	3.00	Fine	42.00	1.6535
	4.00	Fine	41.00	1.6142
	4.50	Coarse	40.50	1.5945
48	1.50	Fine	46.50	1.8307	50.00	1.9685	56.00	2.2047
	2.00	Fine	46.00	1.8110
	3.00	Fine	45.00	1.7717
	4.00	Fine	44.00	1.7323
	5.00	Coarse	43.00	1.6929
50	1.50	Fine	48.50	1.9094
	2.00	Fine	48.00	1.8898
	3.00	Fine	47.00	1.8504
52	1.50	Fine	50.50	1.9882	54.00	2.1260	62.00	2.4409
	2.00	Fine	50.00	1.9685
	3.00	Fine	49.00	1.9291
	4.00	Fine	48.00	1.8898
	5.00	Coarse	47.00	1.8504
55	1.50	Fine	53.50	2.1063
	2.00	Fine	53.00	2.0866
	3.00	Fine	52.00	2.0472
	4.00	Fine	51.00	2.0079
56	1.50	Fine	54.50	2.1457	58.00	2.2835	66.00	2.5984
	2.00	Fine	54.00	2.1260
	3.00	Fine	53.00	2.0866
	4.00	Fine	52.00	2.0472
	5.50	Coarse	50.50	1.9882
Nom. Dia. (mm)	Pitch (mm)	Series	Drill Size (65-75% thread)	Dec. Equiv.	Drill Size	Dec. Equiv.	Drill Size	Dec. Equiv.
					Close Fit		Free Fit
Screw Size			Tapping Drills		Clearance Drills