NST
| WAVE SPRIHG NO. | Remarks | Dh | Ds | LOAD (lb) | WH | FH | HO. OF WAVES* | T | S | SPRING RATE Ref.Lb/in. |
| NST-325 | NST-325 | 3.25 | 2.82 | 54 | 0.109 | 0.2 | 4 | 0.03 | 0.188 | 593 |
| NST-337 | NST-337 | 3.375 | 2.94 | 56 | 0.109 | 0.22 | 4 | 0.03 | 0.188 | 505 |
| NST-350 | NST-350 | 3.5 | 3.07 | 58 | 0.109 | 0.26 | 4 | 0.03 | 0.188 | 384 |
| NST-362 | NST-362 | 3.625 | 3.19 | 60 | 0.109 | 0.27 | 4 | 0.03 | 0.188 | 373 |
| NST-375 | NST-375 | 3.75 | 3.32 | 62 | 0.109 | 0.28 | 4 | 0.03 | 0.188 | 363 |
| NST-387 | NST-387 | 3.875 | 3.44 | 64 | 0.109 | 0.31 | 4 | 0.03 | 0.188 | 318 |
| NST-400 | NST-400 | 4 | 3.57 | 66 | 0.109 | 0.2 | 5 | 0.03 | 0.188 | 725 |
| NST-412 | NST-412 | 4.125 | 3.69 | 67 | 0.109 | 0.2 | 5 | 0.03 | 0.188 | 736 |
| NST-425 | NST-425 | 4.25 | 3.82 | 69 | 0.109 | 0.24 | 5 | 0.03 | 0.188 | 527 |
| NST-437 | NST-437 | 4.375 | 3.94 | 70 | 0.109 | 0.21 | 5 | 0.03 | 0.188 | 693 |
| NST-450 | NST-450 | 4.5 | 4.07 | 72 | 0.109 | 0.28 | 5 | 0.03 | 0.188 | 421 |
| NST-462 | NST-462 | 4.625 | 4.19 | 73 | 0.125 | 0.27 | 5 | 0.03 | 0.188 | 503 |
| NST-475 | NST-475 | 4.75 | 4.32 | 75 | 0.125 | 0.32 | 5 | 0.03 | 0.188 | 385 |
| NST-487 | NST-487 | 4.875 | 4.44 | 76 | 0.125 | 0.32 | 5 | 0.03 | 0.188 | 390 |
| NST-500 | NST-500 | 5 | 4.57 | 78 | 0.125 | 0.35 | 5 | 0.03 | 0.188 | 347 |
| NST-512 | NST-512 | 5.125 | 4.69 | 80 | 0.125 | 0.35 | 5 | 0.03 | 0.188 | 356 |
| NST-525 | NST-525 | 5.25 | 4.82 | 82 | 0.125 | 0.36 | 5 | 0.03 | 0.188 | 349 |
| NST-537 | NST-537 | 5.375 | 4.94 | 84 | 0.125 | 0.44 | 5 | 0.03 | 0.188 | 267 |
| NST-550 | NST-550 | 5.5 | 5.07 | 86 | 0.125 | 0.28 | 6 | 0.03 | 0.188 | 555 |
| NST-562 | NST-562 | 5.625 | 5.19 | 88 | 0.125 | 0.29 | 6 | 0.03 | 0.188 | 533 |
