The Spring,helical,extension, cataloged under National Stock Number 5360-00-320-4978, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 16 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-320-4978 |
| Primary Part Number | G102-34 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.375 INCHES NOMINAL IN |
| Load Rating | 15.500 POUNDS NOMINAL LBS |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | 57-107-14 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 1.733 INCHES NOMINAL IN |
| Spring Deflection Rate | 17.700 POUNDS PER INCH NOMINAL LBS |
| Coil to Hook Inside Length | 0.21875 INCHES NOMINAL BOTH ENDS IN |
| Inside Diameter | 0.267 INCHES NOMINAL IN |
| Spring Length Under Load | 2.500 INCHES NOMINAL IN |
| Coil Quantity | 21 |
| Surface Treatment | CADMIUM OVERALL |
| Coil Helix Direction | LEFT-HAND |
| Material | STEEL OVERALL |
| Hook Radius | 0.09375 INCHES MAXIMUM 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 |
|---|---|
| G102-34 PRIMARY | Northrop Grumman Systems Corporation (USA) |
NSN 5360-00-320-4978 is a Spring,helical,extension, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-320-4978 has 1 manufacturer part number on file: G102-34 (Northrop Grumman Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 4320-00-383-6446. Verify interchangeability with system specifications before substitution.
Key specifications for G102-34: Spring Free Outside Diameter: 0.375 INCHES NOMINAL IN; Load Rating: 15.500 POUNDS NOMINAL LBS; End Style: SHORT TWISTED HOOK BOTH ENDS; Design Type: CLOSED. 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.