The Spring,helical,extension, cataloged under National Stock Number 5360-01-061-5221, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Sullair Corp. Government technical data includes 14 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-061-5221 |
| Primary Part Number | 41273 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Sullair Corp |
| Status | ACTIVE |
| Spring Free Outside Diameter | 1.023 INCHES NOMINAL IN |
| End Style | SHORT TWISTED HOOK FIRST END |
| End Style | MACHINE LOOP SECOND END |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Spring Free Length | 4.171 INCHES NOMINAL IN |
| Spring Deflection Rate | 85.000 POUNDS PER INCH MINIMUM AND 90.000 POUNDS PER INCH MAXIMUM LBS |
| Coil to Hook Inside Length | 0.727 INCHES NOMINAL FIRST END IN |
| Coil to Hook Inside Length | 1.224 INCHES NOMINAL SECOND END IN |
| Inside Diameter | 0.727 INCHES NOMINAL IN |
| Coil Quantity | 12 |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL OVERALL |
| Hook Radius | 0.363 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 |
|---|---|
| 41273 PRIMARY | Sullair Corp (USA) |
NSN 5360-01-061-5221 is a Spring,helical,extension, manufactured by Sullair Corp, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-061-5221 has 1 manufacturer part number on file: 41273 (Sullair Corp).
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-288-8452, 6150-01-425-0602. Verify interchangeability with system specifications before substitution.
Key specifications for 41273: Spring Free Outside Diameter: 1.023 INCHES NOMINAL IN; End Style: SHORT TWISTED HOOK FIRST END; End Style: MACHINE LOOP SECOND END; Design Type: CLOSED. 14 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.