The Spring,helical,extension, cataloged under National Stock Number 5360-00-876-8557, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Honeywell International Inc Div Aerospace-South Bend (bendix Dr). Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5360-00-876-8557 |
| Primary Part Number | 310959 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Honeywell International Inc Div Aerospace-South Bend (bendix Dr) |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Load Rating | 10.00 POUNDS MINIMUM AND 14.00 POUNDS MAXIMUM LBS |
| End Style | MACHINE LOOP SECOND END |
| End Style | MACHINE CUT-OFF FIRST END |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Opening Width | 0.220 INCHES MINIMUM SECOND END IN |
| Material Document and Classification | ASTM A227-41 ASSN STD 1ST MATERIAL RESPONSE OR ASTM 229-41 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Spring Deflection Rate | 65.300 POUNDS PER INCH NOMINAL LBS |
| Coil to Hook Inside Length | 0.406 INCHES MINIMUM SECOND END IN |
| Inside Diameter | 0.257 INCHES NOMINAL IN |
| Spring Length Under Load | 1.250 INCHES NOMINAL IN |
| Coil Quantity | 11 |
| Surface Treatment | VARNISH OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Hook Radius | 0.120 INCHES NOMINAL SECOND END 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 |
|---|---|
| 310959 PRIMARY | Honeywell International Inc Div Aerospace-South Bend (bendix Dr) (USA) |
| 310959 | Direct Line, Inc (USA) |
| Reference | Meaning |
|---|---|
| 310959 | 5/9 Secondary reference Bendix Corp the Brake and Steering Div |
| 5360PL0545131 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5360-00-876-8557 is a Spring,helical,extension, manufactured by Honeywell International Inc Div Aerospace-South Bend (bendix Dr), classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-876-8557 has 2 manufacturer part numbers on file: 310959 (Honeywell International Inc Div Aerospace-South Bend (bendix Dr)), 310959 (Direct Line, Inc).
3 possible matches (shared part number, not a government interchangeability claim): 6220-00-968-0235, 4730-01-250-0085, 7025-01-593-2167. Verify interchangeability with system specifications before substitution.
Key specifications for 310959: Spring Free Outside Diameter: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN; Load Rating: 10.00 POUNDS MINIMUM AND 14.00 POUNDS MAXIMUM LBS; End Style: MACHINE LOOP SECOND END; End Style: MACHINE CUT-OFF FIRST END. 16 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.