length l , in mm	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 ≈
3	0.458						
4	0.503	0.765					
5	0.548	0.825	1.16				
6	0.591	0.885	1.24	2.27			
8	0.68	1	1.39	2.52	4.02		
10	0.768	1.12	1.55	2.76	4.37	9.38	
12	0.856	1.24	1.7	3	4.72	10	18.2
(14)	0.945	1.36	1.86	3.25	5.1	10.6	19.2
16	1.03	1.48	2.01	3.5	5.45	11.2	20.2
(18)	1.12	1.6	2.17	3.75	5.79	11.9	21.2
20	1.21	1.72	2.32	4	6.14	12.6	22.2
(22)	1.3	1.84	2.48	4.25	6.49	13.2	23.2
25	1.43	2.02	2.71	4.62	7.01	14.1	24.7
(28)	1.56	2.2	2.94	5	7.53	15	26.2
30	1.65	2.32	3.1	5.24	7.9	15.7	27.2
35		2.62	3.48	5.86	8.78	17.3	29.7
40			3.87	6.48	9.66	18.9	32.2
45				7.1	10.5	20.5	34.7
50				7.72	11.4	22.1	37.2
55						23.7	39.7
60							42.2