The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-437-7626, 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 10 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.
| Parameter | Value |
|---|---|
| NSN | 5340-00-437-7626 |
| Primary Part Number | 353296 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| First Step Diameter | 0.6190 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN |
| Material Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM |
| End Diameter | 0.5800 INCHES MINIMUM AND 0.5850 INCHES MAXIMUM IN |
| Distance From End to First Step | 0.0650 INCHES MINIMUM AND 0.0700 INCHES MAXIMUM IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Counterbore Length | 0.1870 INCHES MINIMUM AND 0.1980 INCHES MAXIMUM IN |
| Counterbore Diameter | 0.4980 INCHES MINIMUM AND 0.5020 INCHES MAXIMUM IN |
| Bore Diameter | 0.3700 INCHES MINIMUM AND 0.3800 INCHES MAXIMUM 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 |
| Part Number | Manufacturer |
|---|---|
| 353296 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
NSN 5340-00-437-7626 is a Seat,helical Compression Spring, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-437-7626 has 1 manufacturer part number on file: 353296 (Eaton Aerospace, Llc Dba Jackson South).
1 possible match (shared part number, not a government interchangeability claim): 1560-00-587-1883. Verify interchangeability with system specifications before substitution.
Key specifications for 353296: Overall Height: 0.2900 INCHES NOMINAL IN; First Step Diameter: 0.6190 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN; Material Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM; End Diameter: 0.5800 INCHES MINIMUM AND 0.5850 INCHES MAXIMUM IN. 10 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.