The Spring,helical,extension, cataloged under National Stock Number 5360-01-052-5581, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Associated Spring Us, Llc Div Corry. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-052-5581 |
| Primary Part Number | 77535E0240-029-1000M |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Associated Spring Us, Llc Div Corry |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| End Style | HALF HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Opening Width | 0.080 INCHES NOMINAL BOTH ENDS IN |
| Material Document and Classification | QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 1.000 INCHES NOMINAL IN |
| Spring Deflection Rate | 4.700 POUNDS PER INCH NOMINAL LBS |
| Inside Diameter | 0.192 INCHES NOMINAL IN |
| Coil Quantity | 20 |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Hook Radius | 0.096 INCHES NOMINAL BOTH ENDS IN |
| 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 |
|---|---|
| 77535E0240-029-1000M | Associated Spring Us, Llc Div Corry (USA) |
| 4190253 | Fnss Savunma Sistemleri Anonim Sirketi (TUR) |
| LE-029C-1MW | Lee Spring Company Llc (USA) |
| 4190253 | Amz Alabama Inc. (USA) |
| Reference | Meaning |
|---|---|
| LE-029C-1 | 5/9 Secondary reference U.S. Government activity |
| LE-029C-1MW | 5/9 Secondary reference U.S. Government activity |
| 4190253 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5360-01-052-5581 is a Spring,helical,extension, manufactured by Associated Spring Us, Llc Div Corry, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-052-5581 has 4 manufacturer part numbers on file: 77535E0240-029-1000M (Associated Spring Us, Llc Div Corry), 4190253 (Fnss Savunma Sistemleri Anonim Sirketi), LE-029C-1MW (Lee Spring Company Llc), 4190253 (Amz Alabama Inc.).
Key specifications for 77535E0240-029-1000M: Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; End Style: HALF HOOK BOTH ENDS; Design Type: CLOSED; Style Designator: CYLINDRICAL. 13 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.