The Spring,helical,torsion, cataloged under National Stock Number 5360-01-408-3575, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Barnes Group Inc. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-408-3575 |
| Primary Part Number | T021-180-109R |
| Item Name | Spring,helical,torsion |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Barnes Group Inc |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.185 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35, TY1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| End Style | ONE HOOK END OVERALL |
| Style Designator | DOUBLE TORSION, RIGHT AND LEFT HAND |
| Material Document and Classification | ASTM A313 ASSN STD SINGLE MATERIAL RESPONSE AND AMS 5688 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 0.173 INCHES NOMINAL IN |
| Spring Deflection Rate | 0.218 POUNDS PER INCH NOMINAL LBS |
| Stock Diameter | 0.021 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 302 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 |
|---|---|
| T021-180-109R PRIMARY | Barnes Group Inc (USA) |
| S235A322-1 PRIMARY | Telephonics Corp (USA) |
NSN 5360-01-408-3575 is a Spring,helical,torsion, manufactured by Barnes Group Inc, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-408-3575 has 2 manufacturer part numbers on file: T021-180-109R (Barnes Group Inc), S235A322-1 (Telephonics Corp).
Key specifications for T021-180-109R: Spring Free Outside Diameter: 0.185 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35, TY1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; End Style: ONE HOOK END OVERALL; Style Designator: DOUBLE TORSION, RIGHT AND LEFT HAND. 10 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.