The Spring,helical,extension, cataloged under National Stock Number 5360-00-066-6445, 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 19 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 | 5360-00-066-6445 |
| Primary Part Number | G102-574 |
| 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 | 0.369 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN |
| Load Rating | 10.000 POUNDS MINIMUM LBS |
| End Style | MACHINE LOOP BOTH ENDS |
| Design Type | MAINSPRING |
| Style Designator | CYLINDRICAL |
| Opening Width | 0.500 INCHES NOMINAL BOTH ENDS IN |
| Material Document and Classification | QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 2.798 INCHES MINIMUM AND 2.858 INCHES MAXIMUM IN |
| Spring Deflection Rate | 11.400 POUNDS PER INCH NOMINAL LBS |
| Coil to Hook Inside Length | 0.875 INCHES NOMINAL BOTH ENDS IN |
| Inside Diameter | 0.277 INCHES NOMINAL IN |
| Stock Diameter | 0.048 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Spring Length Under Load | 3.705 INCHES MINIMUM IN |
| Coil Quantity | 23 |
| Surface Treatment | CADMIUM OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL UNS K08500 OVERALL |
| End Angular Relationship | ENDS PARALLEL ONE TO OTHER |
| Hook Radius | 0.234 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 |
|---|---|
| G102-574 PRIMARY | Northrop Grumman Systems Corporation (USA) |
NSN 5360-00-066-6445 is a Spring,helical,extension, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-066-6445 has 1 manufacturer part number on file: G102-574 (Northrop Grumman Systems Corporation).
Key specifications for G102-574: Spring Free Outside Diameter: 0.369 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN; Load Rating: 10.000 POUNDS MINIMUM LBS; End Style: MACHINE LOOP BOTH ENDS; Design Type: MAINSPRING. 19 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.