The Spring,helical,extension, cataloged under National Stock Number 5360-01-392-0757, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Charles Reed Knight Jr Dba Knight's Armament Company. Government technical data includes 12 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 | 5360-01-392-0757 |
| Primary Part Number | KAC11286-40090-1 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Charles Reed Knight Jr Dba Knight's Armament Company |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.500 INCHES NOMINAL IN |
| End Style | SHORT LOOP BOTH ENDS |
| Design Type | HELPER SPRING |
| Style Designator | CYLINDRICAL |
| Spring Free Length | 4.000 INCHES NOMINAL IN |
| Coil to Hook Inside Length | 0.125 INCHES NOMINAL BOTH ENDS IN |
| Inside Diameter | 0.343 INCHES NOMINAL IN |
| Stock Diameter | 0.080 INCHES NOMINAL IN |
| Coil Quantity | 41 |
| Coil Helix Direction | RIGHT-HAND |
| Material | STEEL OVERALL |
| Hook Radius | 0.380 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 |
|---|---|
| KAC11286-40090-1 PRIMARY | Charles Reed Knight Jr Dba Knight's Armament Company (USA) |
NSN 5360-01-392-0757 is a Spring,helical,extension, manufactured by Charles Reed Knight Jr Dba Knight's Armament Company, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-392-0757 has 1 manufacturer part number on file: KAC11286-40090-1 (Charles Reed Knight Jr Dba Knight's Armament Company).
Key specifications for KAC11286-40090-1: Spring Free Outside Diameter: 0.500 INCHES NOMINAL IN; End Style: SHORT LOOP BOTH ENDS; Design Type: HELPER SPRING; Style Designator: CYLINDRICAL. 12 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.