The Spring,helical,torsion, cataloged under National Stock Number 5360-00-428-3869, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Grinnell Fire Protection. Government technical data includes 11 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 | 5360-00-428-3869 |
| Primary Part Number | 61538 |
| Item Name | Spring,helical,torsion |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Grinnell Fire Protection |
| Status | ACTIVE |
| Spring Free Outside Diameter | 1.125 INCHES NOMINAL IN |
| End Style | ONE HOOK END BOTH ENDS |
| End Length | 1.500 INCHES NOMINAL FIRST END IN |
| End Length | 2.125 INCHES NOMINAL SECOND END IN |
| Style Designator | SINGLE TORSION LEFT HAND |
| Spring Free Length | 0.406 INCHES NOMINAL IN |
| Inside Diameter | 0.875 INCHES NOMINAL IN |
| Coil Quantity | 2 |
| Coil Helix Direction | LEFT-HAND |
| Material | STEEL CORROSION RESISTING OVERALL |
| End Angular Relationship | ENDS PARALLEL ONE TO OTHER |
| 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 |
|---|---|
| 61538 PRIMARY | Grinnell Fire Protection (USA) |
NSN 5360-00-428-3869 is a Spring,helical,torsion, manufactured by Grinnell Fire Protection, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-428-3869 has 1 manufacturer part number on file: 61538 (Grinnell Fire Protection).
2 possible matches (shared part number, not a government interchangeability claim): 5999-00-925-1675, 4320-01-027-2489. Verify interchangeability with system specifications before substitution.
Key specifications for 61538: Spring Free Outside Diameter: 1.125 INCHES NOMINAL IN; End Style: ONE HOOK END BOTH ENDS; End Length: 1.500 INCHES NOMINAL FIRST END IN; End Length: 2.125 INCHES NOMINAL SECOND END IN. 11 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.