The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-327-5098, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Woodward Fst, Inc. 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 | 5340-01-327-5098 |
| Primary Part Number | 513P639-01 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Woodward Fst, Inc |
| Status | ACTIVE |
| First Step Diameter | 0.8080 INCHES NOMINAL IN |
| End Diameter | 0.5750 INCHES MINIMUM AND 0.5800 INCHES MAXIMUM IN |
| Distance From End to First Step | 1.7250 INCHES MINIMUM AND 1.7300 INCHES MAXIMUM IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Counterbore Length | 0.0450 INCHES NOMINAL IN |
| Counterbore Diameter | 0.5200 INCHES NOMINAL IN |
| Chamfer Angle in Deg | 45.0 |
| Bore Diameter | 0.4160 INCHES MINIMUM AND 0.4180 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 |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 513P639-01 PRIMARY | Woodward Fst, Inc (USA) |
NSN 5340-01-327-5098 is a Seat,helical Compression Spring, manufactured by Woodward Fst, Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-327-5098 has 1 manufacturer part number on file: 513P639-01 (Woodward Fst, Inc).
Key specifications for 513P639-01: Overall Height: 0.2250 INCHES NOMINAL IN; First Step Diameter: 0.8080 INCHES NOMINAL IN; End Diameter: 0.5750 INCHES MINIMUM AND 0.5800 INCHES MAXIMUM IN; Distance From End to First Step: 1.7250 INCHES MINIMUM AND 1.7300 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.