NST
| WAVE SPRIHG NO. | Remarks | Dh | Ds | LOAD (lb) | WH | FH | HO. OF WAVES* | T | S | SPRING RATE Ref.Lb/in. |
| NST-575 | NST-575 | 5.75 | 5.32 | 90 | 0.125 | 0.34 | 6 | 0.03 | 0.188 | 419 |
| NST-587 | NST-587 | 5.875 | 5.44 | 92 | 0.125 | 0.34 | 6 | 0.03 | 0.188 | 428 |
| NST-600 | NST-600 | 6 | 5.57 | 94 | 0.125 | 0.34 | 6 | 0.03 | 0.188 | 437 |
| NST-612 | NST-612 | 6.125 | 5.69 | 96 | 0.125 | 0.28 | 7 | 0.03 | 0.188 | 619 |
| NST-625 | NST-625 | 6.25 | 5.82 | 98 | 0.125 | 0.28 | 7 | 0.03 | 0.188 | 632 |
| NST-637 | NST-637 | 6.375 | 5.94 | 100 | 0.125 | 0.3 | 7 | 0.03 | 0.188 | 571 |
| NST-650 | NST-650 | 6.5 | 6.07 | 102 | 0.125 | 0.3 | 7 | 0.03 | 0.188 | 583 |
| NST-675 | NST-675 | 6.75 | 6.32 | 104 | 0.125 | 0.3 | 7 | 0.03 | 0.188 | 594 |
| NST-700 | NST-700 | 7 | 6.48 | 106 | 0.156 | 0.32 | 7 | 0.03 | 0.233 | 646 |
| NST-725 | NST-725 | 7.25 | 6.73 | 108 | 0.156 | 0.33 | 7 | 0.03 | 0.233 | 621 |
| NST-750 | NST-750 | 7.5 | 6.98 | 110 | 0.156 | 0.36 | 7 | 0.03 | 0.233 | 539 |
| NST-775 | NST-775 | 7.75 | 7.23 | 114 | 0.156 | 0.38 | 7 | 0.03 | 0.233 | 509 |
