The Spring,helical,compression, cataloged under National Stock Number 5360-00-300-7657, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems Land & Armaments L.p.. Government technical data includes 10 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through both NSN and commercial part number lookups. 24 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-300-7657 |
| Primary Part Number | 40523 |
| Item Name | Spring,helical,compression |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Bae Systems Land & Armaments L.p. |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.828 INCHES NOMINAL IN |
| End Style | SPRING END,SQUARED AND GROUND BOTH ENDS |
| Spring Solid Length | 2.160 INCHES NOMINAL IN |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 3.260 INCHES NOMINAL IN |
| Inside Diameter | 0.552 INCHES NOMINAL IN |
| Coil Quantity | 15-1/2 |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL UNS K08500 OVERALL |
| 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 |
|---|---|
| 40523 PRIMARY | Bae Systems Land & Armaments L.p. (USA) |
| Reference | Meaning |
|---|---|
| 4600-25F714PC41 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4500-20F533PC36 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-25V2286APC42 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-25V2094PC37 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-45V2360APC3 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-25F590PC42 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 40523F707 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-25F717PC41 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-45V2086APC3 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-25F588PC42 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-25V2361PC42 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-25V2094APC37 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-45V2360PC3 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-25V2286PC42 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-25V2361APC42 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-45V2086PC3 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-25F601PC42 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-25V2244APC37 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 4600-25F603PC42 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| 40523F603 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
NSN 5360-00-300-7657 is a Spring,helical,compression, manufactured by Bae Systems Land & Armaments L.p., classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-300-7657 has 1 manufacturer part number on file: 40523 (Bae Systems Land & Armaments L.p.).
3 possible matches (shared part number, not a government interchangeability claim): 4310-00-731-6658, 5995-01-074-6960, 5330-01-274-7098. Verify interchangeability with system specifications before substitution.
Key specifications for 40523: Spring Free Outside Diameter: 0.828 INCHES NOMINAL IN; End Style: SPRING END,SQUARED AND GROUND BOTH ENDS; Spring Solid Length: 2.160 INCHES NOMINAL IN; Style Designator: CYLINDRICAL. 10 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.