The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-009-4304, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Woodward, Inc. Div Fuel Systems and Controls. 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-009-4304 |
| Primary Part Number | 3473-066 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Woodward, Inc. Div Fuel Systems and Controls |
| Status | ACTIVE |
| First Step Diameter | 0.6350 INCHES MINIMUM AND 0.6380 INCHES MAXIMUM IN |
| End Diameter | 0.5090 INCHES NOMINAL IN |
| Distance From End to First Step | 0.1560 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Second Step Diameter | 0.7500 INCHES NOMINAL IN |
| First Step Length | 0.1490 INCHES MINIMUM AND 0.1570 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE |
| Bore Diameter | 0.2030 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 3473-066 PRIMARY | Woodward, Inc. Div Fuel Systems and Controls (USA) |
NSN 5340-01-009-4304 is a Seat,helical Compression Spring, manufactured by Woodward, Inc. Div Fuel Systems and Controls, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-009-4304 has 1 manufacturer part number on file: 3473-066 (Woodward, Inc. Div Fuel Systems and Controls).
Key specifications for 3473-066: Overall Height: 0.3650 INCHES NOMINAL IN; First Step Diameter: 0.6350 INCHES MINIMUM AND 0.6380 INCHES MAXIMUM IN; End Diameter: 0.5090 INCHES NOMINAL IN; Distance From End to First Step: 0.1560 INCHES NOMINAL 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.