The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-721-9658, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Defense Logistics Agency Dba Defense Supply Center Philadelphia. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-721-9658 |
| Primary Part Number | 00513 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| Status | CANCELLED |
| First Step Diameter | 0.4370 INCHES NOMINAL IN |
| End Diameter | 0.2500 INCHES MINIMUM AND 0.2600 INCHES MAXIMUM IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Bore Diameter | 0.1250 INCHES MINIMUM AND 0.1350 INCHES MAXIMUM IN |
| Material | STEEL |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 00513 PRIMARY | Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA) |
| 5150892 | Rolls-Royce Solutions America Inc (USA) |
| Reference | Meaning |
|---|---|
| 5150892 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 5150892 | 5/9 Secondary reference General Motors Corp |
| 5340007219658 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5340-00-721-9658 is a Seat,helical Compression Spring, manufactured by Defense Logistics Agency Dba Defense Supply Center Philadelphia, classified under FSC 5340, Hardware, Commercial. Status: cancelled.
NSN 5340-00-721-9658 has 2 manufacturer part numbers on file: 00513 (Defense Logistics Agency Dba Defense Supply Center Philadelphia), 5150892 (Rolls-Royce Solutions America Inc).
1 possible match (shared part number, not a government interchangeability claim): 4130-01-485-6537. Verify interchangeability with system specifications before substitution.
Key specifications for 00513: Overall Height: 0.1560 INCHES NOMINAL IN; First Step Diameter: 0.4370 INCHES NOMINAL IN; End Diameter: 0.2500 INCHES MINIMUM AND 0.2600 INCHES MAXIMUM IN; Design Type: SOLID. 6 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5340-00-721-9658 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.