The Spring,helical,compression, cataloged under National Stock Number 5360-00-597-9846, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Telephone Company of America Incorporated. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-597-9846 |
| Primary Part Number | A21820 |
| Item Name | Spring,helical,compression |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Telephone Company of America Incorporated |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.287 INCHES NOMINAL IN |
| End Style | SPRING END,SQUARED AND GROUND BOTH ENDS |
| Style Designator | CYLINDRICAL |
| Spring Free Length | 0.312 INCHES NOMINAL IN |
| Inside Diameter | 0.188 INCHES NOMINAL IN |
| Coil Quantity | 3-1/2 |
| Surface Treatment | CADMIUM OVERALL |
| Coil Helix Direction | RIGHT-HAND |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| A21820 PRIMARY | Telephone Company of America Incorporated (USA) |
| Reference | Meaning |
|---|---|
| 1045 | 5/9 Secondary reference Telkor/printel |
| 1045 | 5/9 Secondary reference Telkor Inc |
NSN 5360-00-597-9846 is a Spring,helical,compression, manufactured by Telephone Company of America Incorporated, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-597-9846 has 1 manufacturer part number on file: A21820 (Telephone Company of America Incorporated).
Key specifications for A21820: Spring Free Outside Diameter: 0.287 INCHES NOMINAL IN; End Style: SPRING END,SQUARED AND GROUND BOTH ENDS; Style Designator: CYLINDRICAL; Spring Free Length: 0.312 INCHES NOMINAL IN. 9 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.