The Spring,spiral,torsion, cataloged under National Stock Number 5360-01-660-8741, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Smalley Steel Ring Co.. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-660-8741 |
| Primary Part Number | CS056-H1-S17 |
| Item Name | Spring,spiral,torsion |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Smalley Steel Ring Co. |
| Status | ACTIVE |
| Material Document and Classification | SAE AMS 5529 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Material Width | 0.015 INCHES NOMINAL IN |
| Spring Overall Diameter | 0.562 INCHES NOMINAL IN |
| Coil Quantity | 5 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.375 INCHES NOMINAL 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 |
|---|---|
| CS056-H1-S17 PRIMARY | Smalley Steel Ring Co. (USA) |
| Reference | Meaning |
|---|---|
| 12581341 | 7/2 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5360-01-660-8741 is a Spring,spiral,torsion, manufactured by Smalley Steel Ring Co., classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-660-8741 has 1 manufacturer part number on file: CS056-H1-S17 (Smalley Steel Ring Co.).
Key specifications for CS056-H1-S17: Material Document and Classification: SAE AMS 5529 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material Width: 0.015 INCHES NOMINAL IN; Spring Overall Diameter: 0.562 INCHES NOMINAL IN; Coil Quantity: 5. 6 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.