US NACM STANDARD LINK CHAIN G30

NOMINAL SIZE		MATERIAL DIAMETER		WORKING LOAD LIMIT		PROOF TEST(MIN)		BREAKING FORCE MIN		INSIDE LENGTH		INSIDE WIDTH
MM	IN	MM	IN	KG	LBS	KN	LBS	KN	LBS	MM	IN	MM	IN
4	1/8	4	0.156	180	400	3.8	800	7.2	1600	23.9	0.94	6.4	0.25
5.5	3/16	5.5	0.217	365	800	7.2	1500	14.4	3200	24.8	0.98	7.7	0.3
7	1/4	7	0.276	580	1300	11.6	2600	23.2	5200	31.5	1.24	9.8	0.38
8	5/16	8.4	0.331	860	1900	16.9	3800	33.8	7600	32.8	1.29	11.2	0.44
10	3/8	10	0.394	1200	2650	23.5	5300	47.2	10600	35	1.38	14	0.55
11.9	7/16	11.9	0.488	1680	3700	32.9	7400	65.8	14800	41.5	1.64	16.6	0.65
13	1/2	13	0.512	2030	4500	40	9000	80	18000	45.5	1.79	18.2	0.72
16	5/8	16	0.63	3130	6900	61.3	13800	123	27600	56	2.2	20	0.79
20	3/4	20	0.787	4800	10600	94.3	21200	189	42400	70	2.78	25	0.98
22	7/8	22	0.866	5810	12800	114	25600	228	51200	77	3.03	27.5	1.08
25	1	26	1.02	8140	17900	159	35800	318	71600	90.9	3.58	31.7	1.25