The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-364-3479, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Woodward, Inc.. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-364-3479 |
| Primary Part Number | 040427 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Woodward, Inc. |
| Status | ACTIVE |
| End Diameter | 0.7520 INCHES MINIMUM AND 0.7540 INCHES MAXIMUM IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Counterbore Length | 0.1510 INCHES NOMINAL IN |
| Counterbore Diameter | 0.6790 INCHES NOMINAL IN |
| Bore Diameter | 0.3750 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 |
NSN 5340-00-364-3479 is a Seat,helical Compression Spring, manufactured by Woodward, Inc., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-364-3479 has 2 manufacturer part numbers on file: 3249144 (Rolls-Royce Solutions America Inc), 040427 (Woodward, Inc.).
Key specifications for 040427: Overall Height: 0.1880 INCHES NOMINAL IN; End Diameter: 0.7520 INCHES MINIMUM AND 0.7540 INCHES MAXIMUM IN; Design Type: SOLID; Style Designator: SEAT. 7 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.