The Spring,helical,extension, cataloged under National Stock Number 5360-01-021-3068, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is GB Sales and Service. Government technical data includes 15 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-021-3068 |
| Primary Part Number | 3700124 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | GB Sales and Service |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.560 INCHES NOMINAL IN |
| Load Rating | 50.00 POUNDS NOMINAL LBS |
| End Style | MACHINE LOOP BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Opening Width | 1.150 INCHES NOMINAL SECOND END IN |
| Opening Width | 0.340 INCHES NOMINAL FIRST END IN |
| Spring Free Length | 4.496 INCHES MAXIMUM IN |
| Spring Deflection Rate | 132.000 POUNDS PER INCH NOMINAL LBS |
| Coil to Hook Inside Length | 0.500 INCHES NOMINAL FIRST END IN |
| Coil to Hook Inside Length | 1.310 INCHES NOMINAL SECOND END IN |
| Inside Diameter | 0.334 INCHES NOMINAL IN |
| Spring Length Under Load | 4.380 INCHES NOMINAL IN |
| Coil Quantity | 19-1/2 |
| Coil Helix Direction | RIGHT-HAND OR 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 |
|---|---|
| 3700124 PRIMARY | GB Sales and Service (USA) |
| Reference | Meaning |
|---|---|
| 307827 | C/1 Advisory reference — outside the item-of-supply concept Lockheed Martin Sippican, Inc. Div Lockheed Martin Marion |
| R14163 | 5/9 Secondary reference Cnh Industrial America Llc Dba Cnh America |
| 307827 | 5/9 Secondary reference Bendix Corp the Brake and Steering Div |
| 935-00077 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 307827 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5360-01-021-3068 is a Spring,helical,extension, manufactured by GB Sales and Service, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-021-3068 has 1 manufacturer part number on file: 3700124 (GB Sales and Service).
1 possible match (shared part number, not a government interchangeability claim): 5360-01-109-2760. Verify interchangeability with system specifications before substitution.
Key specifications for 3700124: Spring Free Outside Diameter: 0.560 INCHES NOMINAL IN; Load Rating: 50.00 POUNDS NOMINAL LBS; End Style: MACHINE LOOP BOTH ENDS; Design Type: CLOSED. 15 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.