The Spring,helical,torsion, cataloged under National Stock Number 5360-01-181-1011, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company. Government technical data includes 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-181-1011 |
| Primary Part Number | 1S-5399-1ITEM 31 1S5416 |
| Item Name | Spring,helical,torsion |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.519 INCHES MINIMUM AND 0.529 INCHES MAXIMUM IN |
| End Style | HALF HOOK OVERALL |
| Style Designator | SINGLE TORSION RIGHT HAND |
| Material Document and Classification | ASTM A229 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | CADMIUM OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Center Style | SQUARE TYPE |
| Material | STEEL OVERALL |
| End Angular Relationship | ENDS PARALLEL ONE TO OTHER |
| 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 |
|---|---|
| 1S-5399-1 ITEM 31 | Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company (USA) |
| 1S-5399-1ITEM 31 1S5416 PRIMARY | Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company (USA) |
| Reference | Meaning |
|---|---|
| 1S-5399-1 ITEM | C/1 Advisory reference — outside the item-of-supply concept Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company |
| 28-601 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 1S-5399-1 PIECE 31 | C/1 Advisory reference — outside the item-of-supply concept Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company |
NSN 5360-01-181-1011 is a Spring,helical,torsion, manufactured by Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-181-1011 has 2 manufacturer part numbers on file: 1S-5399-1 ITEM 31 (Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company), 1S-5399-1ITEM 31 1S5416 (Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-200-8668, 5998-01-407-0581. Verify interchangeability with system specifications before substitution.
Key specifications for 1S-5399-1ITEM 31 1S5416: Spring Free Outside Diameter: 0.519 INCHES MINIMUM AND 0.529 INCHES MAXIMUM IN; End Style: HALF HOOK OVERALL; Style Designator: SINGLE TORSION RIGHT HAND; Material Document and Classification: ASTM A229 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.