The Spring,helical,extension, cataloged under National Stock Number 5360-00-304-4297, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Bosch Security Systems, Llc. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-304-4297 |
| Primary Part Number | 42981P2 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Bosch Security Systems, Llc |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.139 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Load Rating | 3.350 POUNDS NOMINAL LBS |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | ASTM A228 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Inside Diameter | 0.077 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN |
| Spring Length Under Load | 22.750 INCHES NOMINAL IN |
| Surface Treatment | TIN OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL UNS K08500 OVERALL |
| Hook Radius | 0.040 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 |
|---|---|
| 42981P2 PRIMARY | Bosch Security Systems, Llc (USA) |
NSN 5360-00-304-4297 is a Spring,helical,extension, manufactured by Bosch Security Systems, Llc, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-304-4297 has 1 manufacturer part number on file: 42981P2 (Bosch Security Systems, Llc).
Key specifications for 42981P2: Spring Free Outside Diameter: 0.139 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Load Rating: 3.350 POUNDS NOMINAL LBS; End Style: SHORT TWISTED HOOK BOTH ENDS; Design Type: CLOSED. 12 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.