The Spring,helical,extension, cataloged under National Stock Number 5360-00-451-7832, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-451-7832 |
| Primary Part Number | HL8291-1 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.135 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Load Rating | 5.675 POUNDS MINIMUM AND 5.825 POUNDS MAXIMUM LBS |
| End Style | OFFSET HOOK, RIGHT ANGLE SECOND END |
| End Style | OFFSET HOOK, SIDE FIRST END |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Opening Width | 0.156 INCHES NOMINAL FIRST END IN |
| Opening Width | 0.190 INCHES NOMINAL BOTH ENDS IN |
| Material Document and Classification | QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 7.624 INCHES NOMINAL IN |
| Spring Deflection Rate | 1.000 POUNDS PER INCH NOMINAL LBS |
| Coil to Hook Inside Length | 0.263 INCHES NOMINAL SECOND END IN |
| Coil to Hook Inside Length | 0.462 INCHES NOMINAL FIRST END IN |
| Inside Diameter | 0.089 INCHES NOMINAL IN |
| Spring Length Under Load | 11.040 INCHES NOMINAL IN |
| Coil Quantity | 300 |
| 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 |
|---|---|
| HL8291-1 PRIMARY | Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA) |
| Reference | Meaning |
|---|---|
| HL8291-1 | 5/9 Secondary reference U.S. Government activity |
NSN 5360-00-451-7832 is a Spring,helical,extension, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-451-7832 has 1 manufacturer part number on file: HL8291-1 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).
Key specifications for HL8291-1: Spring Free Outside Diameter: 0.135 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 2 FED SPEC ALL TREATMENT RESPONSES OVERALL; Load Rating: 5.675 POUNDS MINIMUM AND 5.825 POUNDS MAXIMUM LBS; End Style: OFFSET HOOK, RIGHT ANGLE SECOND END. 19 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.