The Spring,helical,extension, cataloged under National Stock Number 5360-01-671-2598, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Industrial Spring Co Inc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-671-2598 |
| Primary Part Number | 20IN-.170 WIRE,1.25ID DOUBLE L00 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Industrial Spring Co Inc |
| Status | ACTIVE |
| Spring Free Outside Diameter | 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN |
| Load Rating | 140.0 POUNDS NOMINAL LBS |
| End Style | FULL LOOP BOTH ENDS |
| Design Type | HELPER SPRING |
| Spring Free Length | 19.875 INCHES MINIMUM AND 20.125 INCHES MAXIMUM IN |
| Inside Diameter | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Stock Diameter | 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 20IN-.170 WIRE,1.25ID DOUBLE L00 PRIMARY | Industrial Spring Co Inc (USA) |
| 02788 PRIMARY | Tru-Hitch, Inc. (USA) |
NSN 5360-01-671-2598 is a Spring,helical,extension, manufactured by Industrial Spring Co Inc, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-671-2598 has 2 manufacturer part numbers on file: 20IN-.170 WIRE,1.25ID DOUBLE L00 (Industrial Spring Co Inc), 02788 (Tru-Hitch, Inc.).
Key specifications for 20IN-.170 WIRE,1.25ID DOUBLE L00: Spring Free Outside Diameter: 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN; Load Rating: 140.0 POUNDS NOMINAL LBS; End Style: FULL LOOP BOTH ENDS; Design Type: HELPER SPRING. 8 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.