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chainNacm1990 Standard Link ChainProof Coil Chain Nacm1990 (G30)
| NORMINAL SIZE | MATERIAL DIAMETER | WORKINGLOADLIMIT (MAX) | PROOF TEST (MIN) | BREAKING FORCE MIN | INSIDE LENGTH (MAX) | INSIDE WIDTH (MIN) | |||||||
| MM | IN | MM | IN | KG | LB | KN | LB | KN | LB | MM | IN | MM | IN |
| 4.0 | 1/8 | 4.0 | 0.156 | 170 | 375 | 3.6 | 800 | 7.1 | 1600 | 23.9 | 0.94 | 6.4 | 0.25 |
| 5.5 | 3/16 | 5.5 | 0.217 | 365 | 800 | 7.2 | 1600 | 14.3 | 3200 | 24.8 | 0.98 | 7.7 | 0.30 |
| 7.0 | 1/4 | 7.0 | 0.276 | 580 | 1300 | 11.6 | 2600 | 23.1 | 5200 | 31.5 | 1.24 | 9.8 | 0.38 |
| 8.0 | 5/16 | 8.0 | 0.315 | 860 | 1900 | 15.1 | 3400 | 30.2 | 6800 | 32.8 | 1.29 | 11.2 | 0.44 |
| 10.0 | 3/8 | 10.0 | 0.394 | 1200 | 2650 | 23.6 | 5300 | 47.1 | 10600 | 35.0 | 1.38 | 14.0 | 0.55 |
| 13.0 | 1/2 | 13.0 | 0.512 | 2030 | 4500 | 39.8 | 8950 | 79.6 | 17900 | 45.5 | 1.79 | 18.2 | 0.72 |
| 16.0 | 5/8 | 16.0 | 0.630 | 3130 | 6900 | 60.3 | 13600 | 120.6 | 27200 | 56.0 | 2.20 | 20.0 | 0.79 |
| 20.0 | 3/4 | 20.0 | 0.787 | 4800 | 10600 | 94.3 | 21200 | 188.5 | 42400 | 70.0 | 2.76 | 25.0 | 0.98 |
| 22.0 | 7/8 | 22.0 | 0.866 | 5810 | 12800 | 114.1 | 25600 | 228.1 | 51200 | 77.0 | 3.03 | 27.5 | 1.08 |
| 25.0 | 1" | 26.0 | 1.020 | 8140 | 17900 | 159.1 | 35800 | 318.2 | 71600 | 90.9 | 3.58 | 31.7 | 1.25 |
Nacm1990 Standard Link Chain