メートルねじ用（M1〜M100）
（注1）※印のものはJISより削除されています。
（注2）( )内の数値は、並目ねじ 5H(2級)、細目ねじ 4H・5H(１級)を記載してあります。
			単位 mm
	下シタ穴アナドリル径	めねじ内径
呼　び		JIS ６H（2級）
（注1）		（注2）
		Max.	Min.
M 1 × 0.25	0.75	(0.785)	(0.729)
M 1 × 0.2	0.8	(0.821)	(0.783)
M 1.1× 0.25	0.85	(0.885)	(0.829)
M 1.1× 0.2	0.9	(0.921)	(0.883)
M 1.2× 0.25	0.95	(0.985)	(0.929)
M 1.2× 0.2	1	(1.021)	(0.983)
M 1.4× 0.3	1.1	(1.142)	(1.075)
M 1.4× 0.2	1.2	(1.221)	(1.183)
M 1.6× 0.35	1.25	1.321	1.221
M 1.6× 0.2	1.4	(1.421)	(1.383)
＊M 1.7× 0.35	1.35	1.421	1.321
＊M 1.7× 0.2	1.45	1.5	1.46
M 1.8× 0.35	1.45	1.521	1.421
M 1.8× 0.2	1.6	(1.621)	(1.583)
M 2 × 0.4	1.6	1.679	1.567
M 2 × 0.25	1.75	(1.785)	(1.729)
M 2.2× 0.45	1.75	1.838	1.713
M 2.2× 0.25	1.95	(1.985)	(1.929)
＊M 2.3× 0.4	1.9	1.979	1.867
＊M 2.3× 0.25	2.05	2.061	2.001
M 2.5× 0.45	2.1	2.138	2.013
M 2.5× 0.35	2.2	2.221	2.121
＊M 2.6× 0.45	2.2	2.238	2.113
＊M 2.6× 0.35	2.2	2.246	2.186
M 3 × 0.5	2.5	2.599	2.459
M 3 × 0.35	2.7	2.721	2.621
＊M 3 × 0.6	2.4	2.44	2.28
M 3.5× 0.6	2.9	3.01	2.85
M 3.5× 0.35	3.2	3.221	3.121
M 4 × 0.7	3.3	3.422	3.242
M 4 × 0.5	3.5	3.599	3.459
＊M 4 × 0.75	3.25	3.326	3.106
M 4.5× 0.75	3.8	3.878	3.688
M 4.5× 0.5	4	4.099	3.959
M 5 × 0.8	4.2	4.334	4.134
M 5 × 0.5	4.5	4.599	4.459
＊M 5 × 0.9	4.1	4.17	3.93
＊M 5.5× 0.9	4.6	4.67	4.43
M 5.5× 0.5	5	5.099	4.959
M 6 × 1	5	5.153	4.917
M 6 × 0.75	5.3	5.378	5.188
＊M 6 × 0.5	5.5	5.55	5.4
M 7 × 1	6	6.153	5.917
M 7 × 0.75	6.3	6.378	6.188
＊M 7 × 0.5	6.5	6.55	6.4
M 8 × 1.25	6.8	6.912	6.647
M 8 × 1	7	7.153	6.917
M 8 × 0.75	7.3	7.378	7.188
＊M 8 × 0.5	7.5	7.52	7.4
M 9 × 1.25	7.8	7.912	7.647
M 9 × 1	8	8.153	7.917
M 9 × 0.75	8.3	8.378	8.188
＊M 9 × 0.5	8.5	8.52	8.4
M 10 × 1.5	8.5	8.676	8.376
M 10 × 1.25	8.8	8.912	8.647
M 10 × 1	9	9.153	8.917
M 10 × 0.75	9.3	9.378	9.188
＊M 10 × 0.5	9.5	9.52	9.4
M 11 × 1.5	9.5	9.676	9.376
＊M 11 × 1.25	9.7	9.796	9.516
M 11 × 1	10	10.153	9.917
M 11 × 0.75	10.3	10.378	10.188
＊M 11 × 0.5	10.5	10.52	10.4
M 12 × 1.75	10.3	10.441	10.106
M 12 × 1.5	10.5	10.676	10.376
M 12 × 1.25	10.8	10.912	10.647
M 12 × 1	11	11.153	10.917
＊M 12 × 0.5	11.5	11.52	11.4
＊M 13 × 1.5	11.5	11.602	11.212
＊M 13 × 1	11.9	12.03	11.81
＊M 13 × 0.5	12.4	12.52	12.4
M 14 × 2	12	12.21	11.835
M 14 × 1.5	12.5	12.676	12.376
M 14 × 1	13	13.153	12.917
＊M 14 × 0.5	13.4	13.52	13.4
M 15 × 1.5	13.5	13.676	13.376
M 15 × 1	14	14.153	13.917
＊M 15 × 0.5	14.4	14.52	14.4
M 16 × 2	14	14.21	13.835
M 16 × 1.5	14.5	14.676	14.376
M 16 × 1	15	15.153	14.917
＊M 16 × 0.5	15.4	15.52	15.4
M 17 × 1.5	15.5	15.676	15.376
M 17 × 1	16	16.153	15.917
M 18 × 2.5	15.5	15.744	15.294
M 18 × 2	16	16.21	15.835
M 18 × 1.5	16.5	16.676	16.376
M 18 × 1	17	17.153	16.917
＊M 18 × 0.5	17.4	17.52	17.4
M 20 × 2.5	17.5	17.744	17.294
M 20 × 2	18	18.21	17.835
M 20 × 1.5	18.5	18.676	18.376
M 20 × 1	19	19.153	18.917
＊M 20 × 0.5	19.4	19.52	19.4
M 22 × 2.5	19.5	19.744	19.294
M 22 × 2	20	20.21	19.835
M 22 × 1.5	20.5	20.676	20.376
M 22 × 1	21	21.153	20.917
＊M 22 × 0.5	21.4	21.52	21.4
M 24 × 3	21	21.252	20.752
M 24 × 2	22	22.21	21.835
M 24 × 1.5	22.5	22.676	22.376
M 24 × 1	23	23.153	22.917
＊M 24 × 0.5	23.4	23.52	23.4
M 25 × 2	23	23.21	22.835
M 25 × 1.5	23.5	23.676	23.376
M 25 × 1	24	24.153	23.917
＊M 26 × 2	23.8	24.082	23.622
M 26 × 1.5	24.5	24.676	24.376
＊M 26 × 1	24.8	25.03	24.81
M 27 × 3	24	24.252	23.752
M 27 × 2	25	25.21	24.835
M 27 × 1.5	25.5	25.676	25.376
M 27 × 1	26	26.153	25.917
M 28 × 2	26	26.21	25.835
M 28 × 1.5	26.5	26.676	26.376
M 28 × 1	27	27.153	26.917
M 30 × 3.5	26.5	26.771	26.211
M 30 × 3	27	27.252	26.752
M 30 × 2	28	28.21	27.835
M 30 × 1.5	28.5	28.676	28.376
M 30 × 1	29	29.153	28.917
M 32 × 2	30	30.21	29.835
M 32 × 1.5	30.5	30.676	30.376
＊M 32 × 1	30.8	31.03	30.81
M 33 × 3.5	29.5	29.771	29.211
M 33 × 3	30	30.252	29.752
M 33 × 2	31	31.21	30.835
M 33 × 1.5	31.5	31.676	31.376
＊M 34 × 2	31.8	32.082	31.622
＊M 34 × 1.5	32.4	32.602	32.212
＊M 34 × 1	32.8	33.03	32.81
M 35 × 1.5	33.5	33.676	33.376
M 36 × 4	32	32.27	31.67
M 36 × 3	33	33.252	32.752
M 36 × 2	34	34.21	33.835
M 36 × 1.5	34.5	34.676	34.376
＊M 36 × 1	34.8	35.03	34.81
＊M 38 × 2	35.8	36.082	35.622
M 38 × 1.5	36.5	36.676	36.376
＊M 38 × 1	36.8	37.03	36.81
M 39 × 4	35	35.27	34.67
M 39 × 3	36	36.252	35.752
M 39 × 2	37	37.21	36.835
M 39 × 1.5	37.5	37.676	37.376
M 40 × 3	37	37.252	36.752
M 40 × 2	38	38.21	37.835
M 40 × 1.5	38.5	38.676	38.376
＊M 40 × 1	38.8	39.03	38.81
M 42 × 4.5	37.5	37.799	37.129
M 42 × 4	38	38.27	37.67
M 42 × 3	39	39.252	38.752
M 42 × 2	40	40.21	39.835
M 42 × 1.5	40.5	40.676	40.376
＊M 42 × 1	40.8	41.03	40.81
M 45 × 4.5	40.5	40.799	40.129
M 45 × 4	41	41.27	40.67
M 45 × 3	42	42.252	41.752
M 45 × 2	43	43.21	42.835
M 45 × 1.5	43.5	43.676	43.376
＊M 45 × 1	43.8	44.03	43.81
M 48 × 5	43	43.297	42.587
M 48 × 4	44	44.27	43.67
M 48 × 3	45	45.252	44.752
M 48 × 2	46	46.21	45.835
M 48 × 1.5	46.5	46.676	46.376
＊M 48 × 1	46.8	47.03	46.81
M 50 × 3	47	47.252	46.752
M 50 × 2	48	48.21	47.835
M 50 × 1.5	48.5	48.676	48.376
＊M 50 × 1	48.8	49.03	48.81
M 52 × 5	47	47.297	46.587
M 52 × 4	48	48.27	47.67
M 52 × 3	49	49.252	48.752
M 52 × 2	50	50.21	49.835
M 52 × 1.5	50.5	50.676	50.376
M 55 × 4	51	51.27	50.67
M 55 × 3	52	52.252	51.752
M 55 × 2	53	53.21	52.835
M 55 × 1.5	53.5	53.676	53.376
M 56 × 5.5	50.5	50.796	50.046
M 56 × 4	52	52.27	51.67
M 56 × 3	53	53.252	52.752
M 56 × 2	54	54.21	53.835
M 56 × 1.5	54.5	54.676	54.376
M 58 × 4	54	54.27	53.67
M 58 × 3	55	55.252	54.752
M 58 × 2	56	56.21	55.835
M 58 × 1.5	56.5	56.676	56.376
M 60 × 5.5	54.5	54.796	54.046
M 60 × 4	56	56.27	55.67
M 60 × 3	57	57.252	56.752
M 60 × 2	58	58.21	57.835
M 60 × 1.5	58.5	58.676	58.376
M 62 × 4	58	58.27	57.67
M 62 × 3	59	59.252	58.752
M 62 × 2	60	60.21	59.835
M 62 × 1.5	60.5	60.676	60.376
M 64 × 6	58	58.305	57.505
M 64 × 4	60	60.27	59.67
M 64 × 3	61	61.252	60.752
M 64 × 2	62	62.21	61.835
M 64 × 1.5	62.5	62.676	62.376
M 65 × 4	61	61.27	60.67
M 65 × 3	62	62.252	61.752
M 65 × 2	63	63.21	62.835
M 65 × 1.5	63.5	63.676	63.376
M 68 × 6	62	62.305	61.505
M 68 × 4	64	64.27	63.67
M 68 × 3	65	65.252	64.752
M 68 × 2	66	66.21	65.835
M 68 × 1.5	66.5	66.676	66.376
M 70 × 6	64	64.305	63.505
M 70 × 4	66	66.27	65.67
M 70 × 3	67	67.252	66.752
M 70 × 2	68	68.21	67.835
M 70 × 1.5	68.5	68.676	68.376
M 72 × 6	66	66.305	65.505
M 72 × 4	68	68.27	67.67
M 72 × 3	69	69.252	68.752
M 72 × 2	70	70.21	69.835
M 72 × 1.5	70.5	70.676	70.376
M 75 × 4	71	71.27	70.67
M 75 × 3	72	72.252	71.752
M 75 × 2	73	73.21	72.835
M 75 × 1.5	73.5	73.676	73.376
M 76 × 6	70	70.305	69.505
M 76 × 4	72	72.27	71.67
M 76 × 3	73	73.252	72.752
M 76 × 2	74	74.21	73.835
M 76 × 1.5	74.5	74.676	74.376
M 78 × 2	76	76.21	75.835
M 80 × 6	74	74.305	73.505
M 80 × 4	76	76.27	75.67
M 80 × 3	77	77.252	76.752
M 80 × 2	78	78.21	77.835
M 80 × 1.5	78.5	78.676	78.376
M 82 × 2	80	80.21	79.835
M 85 × 6	79	79.305	78.505
M 85 × 4	81	81.27	80.67
M 85 × 3	82	82.252	81.752
M 85 × 2	83	83.21	82.835
M 90 × 6	84	84.305	83.505
M 90 × 4	86	86.27	85.67
M 90 × 3	87	87.252	86.752
M 90 × 2	88	88.21	87.835
M 95 × 6	89	89.305	88.505
M 95 × 4	91	91.27	90.67
M 95 × 3	92	92.252	91.752
M 95 × 2	93	93.21	92.835
M 100 × 6	94	94.305	93.505
M 100 × 4	96	96.27	95.67
M 100 × 3	97	97.252	96.752
M 100 × 2	98	98.21	97.835