The Spring,helical,torsion, cataloged under National Stock Number 5360-01-251-5985, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Aimtron Systems, Llc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-251-5985 |
| Primary Part Number | 507393 |
| Item Name | Spring,helical,torsion |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Aimtron Systems, Llc |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.546 INCHES MINIMUM AND 0.566 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| End Style | CURVED END OVERALL |
| End Length | 1.212 INCHES MINIMUM AND 1.242 INCHES MAXIMUM BOTH ENDS IN |
| Style Designator | SINGLE TORSION LEFT HAND |
| Spring Free Length | 270.000 INCHES NOMINAL IN |
| Coil Quantity | 7-3/4 |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Coil Helix Direction | LEFT-HAND |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 507393 PRIMARY | Aimtron Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 507393 | 5/9 Secondary reference Cardion Inc |
NSN 5360-01-251-5985 is a Spring,helical,torsion, manufactured by Aimtron Systems, Llc, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-251-5985 has 1 manufacturer part number on file: 507393 (Aimtron Systems, Llc).
1 possible match (shared part number, not a government interchangeability claim): 6750-01-427-4827. Verify interchangeability with system specifications before substitution.
Key specifications for 507393: Spring Free Outside Diameter: 0.546 INCHES MINIMUM AND 0.566 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 2 FED SPEC ALL TREATMENT RESPONSES OVERALL; End Style: CURVED END OVERALL; End Length: 1.212 INCHES MINIMUM AND 1.242 INCHES MAXIMUM BOTH ENDS IN. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.