The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-004-8258, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 11 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-004-8258 |
| Primary Part Number | 824823 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| First Step Diameter | 0.9690 INCHES NOMINAL IN |
| End Diameter | 0.8780 INCHES NOMINAL IN |
| Distance From End to First Step | 0.9690 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Counterbore Length | 1.0620 INCHES NOMINAL IN |
| Second Step Diameter | 1.3440 INCHES NOMINAL IN |
| Counterbore Diameter | 0.6250 INCHES NOMINAL IN |
| First Step Length | 0.2810 INCHES NOMINAL IN |
| Bore Diameter | 0.0620 INCHES NOMINAL IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| 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 |
|---|---|
| 824823 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
NSN 5340-00-004-8258 is a Seat,helical Compression Spring, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-004-8258 has 1 manufacturer part number on file: 824823 (Eaton Aerospace, Llc Dba Jackson South).
1 possible match (shared part number, not a government interchangeability claim): 1270-00-612-9217. Verify interchangeability with system specifications before substitution.
Key specifications for 824823: Overall Height: 1.4380 INCHES NOMINAL IN; First Step Diameter: 0.9690 INCHES NOMINAL IN; End Diameter: 0.8780 INCHES NOMINAL IN; Distance From End to First Step: 0.9690 INCHES NOMINAL IN. 11 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.
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.