The Spring,helical,extension, cataloged under National Stock Number 5360-01-709-0913, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Century Spring Mfg. Co Inc. Government technical data includes 6 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 | 5360-01-709-0913 |
| Primary Part Number | B3-66 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Century Spring Mfg. Co Inc |
| Status | ACTIVE |
| End Style | MACHINE HOOK BOTH ENDS |
| Design Type | SPRING |
| Style Designator | CYLINDRICAL |
| Outside Diameter | 0.25 INCHES NOMINAL IN |
| Spring Deflection Rate | 15.0 POUNDS PER INCH NOMINAL LBS |
| 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 |
|---|---|
| B3-66 PRIMARY | Century Spring Mfg. Co Inc (USA) |
NSN 5360-01-709-0913 is a Spring,helical,extension, manufactured by Century Spring Mfg. Co Inc, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-709-0913 has 1 manufacturer part number on file: B3-66 (Century Spring Mfg. Co Inc).
Key specifications for B3-66: End Style: MACHINE HOOK BOTH ENDS; Design Type: SPRING; Style Designator: CYLINDRICAL; Outside Diameter: 0.25 INCHES NOMINAL IN. 6 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.