The Spring,helical,compression, cataloged under National Stock Number 5360-00-052-2041, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Siemens Energy, Inc.. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-052-2041 |
| Primary Part Number | HC258A |
| Item Name | Spring,helical,compression |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Siemens Energy, Inc. |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.750 INCHES NOMINAL IN |
| Material Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| Load Rating | 11.900 POUNDS NOMINAL LBS |
| End Style | SPRING END,SQUARED AND GROUND BOTH ENDS |
| Spring Solid Length | 0.545 INCHES NOMINAL IN |
| Accommodated Rod Diameter | 0.468 INCHES NOMINAL IN |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | DELAVAL STEAM TURBINE CO.,PD-2 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Spring Free Length | 1.813 INCHES NOMINAL IN |
| Spring Deflection Rate | 38.000 POUNDS PER INCH NOMINAL LBS |
| Inside Diameter | 0.590 INCHES NOMINAL IN |
| Spring Length Under Load | 1.500 INCHES NOMINAL IN |
| Spring Solid Outside Diameter | 0.750 INCHES NOMINAL IN |
| Coil Quantity | 7 |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Bore Diameter | 0.875 INCHES NOMINAL IN |
| Material | STEEL 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 |
|---|---|
| HC258A PRIMARY | Siemens Energy, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 1575-9 | C/1 Advisory reference — outside the item-of-supply concept Fl Aerospace Corp Janitrol Aero Div/general Design |
| HC-258A | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5360-00-052-2041 is a Spring,helical,compression, manufactured by Siemens Energy, Inc., classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-052-2041 has 1 manufacturer part number on file: HC258A (Siemens Energy, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 6515-01-583-6378. Verify interchangeability with system specifications before substitution.
Key specifications for HC258A: Spring Free Outside Diameter: 0.750 INCHES NOMINAL IN; Material Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM; Load Rating: 11.900 POUNDS NOMINAL LBS; End Style: SPRING END,SQUARED AND GROUND BOTH ENDS. 17 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.