length l , in mm	weight for thread M1, in kg per 1000 pieces ≈	weight for thread M1.2, in kg per 1000 pieces ≈	weight for thread M1.4, in kg per 1000 pieces ≈	weight for thread M1.8, in kg per 1000 pieces ≈	weight for thread (M1.8), in kg per 1000 pieces ≈	weight for thread M2, in kg per 1000 pieces ≈	weight for thread M2.5, in kg per 1000 pieces ≈	weight for thread M3, in kg per 1000 pieces ≈	weight for thread (M3.5), in kg per 1000 pieces ≈	weight for thread M4, in kg per 1000 pieces ≈	weight for thread M5, in kg per 1000 pieces ≈	weight for thread M6, in kg per 1000 pieces ≈	weight for thread M8, in kg per 1000 pieces ≈	weight for thread M10, in kg per 1000 pieces ≈
2	0.025	0.038	0.053	0.07	0.109
3	0.03	0.045	0.062	0.082	0.125	0.16	0.272
4	0.035	0.052	0.071	0.094	0.14	0.179	0.302	0.515
5	0.04	0.059	0.08	0.105	0.155	0.198	0.332	0.56	0.786	1.09
6	0.045	0.067	0.089	0.117	0.17	0.217	0.362	0.604	0.845	1.17	2.06
8	0.055	0.081	0.106	0.14	0.2	0.254	0.422	0.692	0.966	1.33	2.3	3.56
10	0.065	0.095	0.124	0.163	0.23	0.291	0.482	0.78	1.08	1.47	2.55	3.92	7.85
12		0.11	0.142	0.186	0.26	0.329	0.542	0.868	1.2	1.63	2.8	4.27	8.49	14.6
(14)			0.16	0.209	0.29	0.365	0.602	0.956	1.32	1.79	3.05	4.62	9.13	15.6
16				0.232	0.32	0.402	0.662	1.04	1.44	1.95	3.3	4.98	9.77	16.6
(18)					0.35	0.44	0.722	1.13	1.56	2.1	3.54	5.34	10.4	17.6
20						0.478	0.782	1.22	1.68	2.25	3.78	5.69	11	18.6
(22)							0.842	1.31	1.8	2.4	4.02	6.04	11.7	19.6
25							0.932	1.44	1.98	2.64	4.4	6.56	12.6	21.1
(28)								1.57	2.16	2.87	4.67	7.1	13.6	22.6
30								1.66	2.28	3.02	5.02	7.45	14.2	23.6
35									2.57	3.41	5.62	8.25	15.8	26.1
40										3.8	6.25	9.2	17.4	28.6
45											6.88	10	18.9	31.1
50											7.5	10.9	20.6	33.6
(55)												11.8	22.1	36.1
60												12.7	23.7	38.6
(65)													25.2	41.1
70													26.8	43.6
(75)													28.3	46.1
80													29.8	48.6