The Spring,helical,extension, cataloged under National Stock Number 5360-00-351-4874, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 13 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 | 5360-00-351-4874 |
| Primary Part Number | 503-1240-001 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| Status | ACTIVE |
| Spring Free Outside Diameter | 1.5625 INCHES NOMINAL IN |
| Load Rating | 3.20 POUNDS NOMINAL LBS |
| End Style | RAISED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Opening Width | 0.03125 INCHES NOMINAL BOTH ENDS IN |
| Spring Free Length | 0.383 INCHES NOMINAL IN |
| Inside Diameter | 0.116 INCHES NOMINAL IN |
| Spring Length Under Load | 0.562 INCHES NOMINAL IN |
| Coil Quantity | 7 |
| Coil Helix Direction | RIGHT-HAND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hook Radius | 0.068 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 |
|---|---|
| 503-1240-001 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
NSN 5360-00-351-4874 is a Spring,helical,extension, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-351-4874 has 1 manufacturer part number on file: 503-1240-001 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).
Key specifications for 503-1240-001: Spring Free Outside Diameter: 1.5625 INCHES NOMINAL IN; Load Rating: 3.20 POUNDS NOMINAL LBS; End Style: RAISED HOOK BOTH ENDS; Design Type: CLOSED. 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.