The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-185-6636, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. 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 | 5340-01-185-6636 |
| Primary Part Number | 784583-1 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| FSC Application Data | ACFT ENG FUEL SYSTEM COMPONENTS |
| First Step Diameter | 0.7000 INCHES NOMINAL IN |
| End Diameter | 0.4820 INCHES MINIMUM AND 0.4860 INCHES MAXIMUM IN |
| Distance From End to First Step | 0.1100 INCHES NOMINAL IN |
| Design Type | SOLID |
| Supplementary Features | USED ON BYPASS VALVE,785555,FOR F100 ACFT ENGINE |
| Style Designator | SEAT |
| Chamfer Angle in Deg | 30.0 |
| Bore Diameter | 0.1246 INCHES MINIMUM AND 0.1254 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 |
|---|---|
| 784583-1 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 5340-01-185-6636 is a Seat,helical Compression Spring, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-185-6636 has 1 manufacturer part number on file: 784583-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 784583-1: Overall Height: 0.1700 INCHES NOMINAL IN; FSC Application Data: ACFT ENG FUEL SYSTEM COMPONENTS; First Step Diameter: 0.7000 INCHES NOMINAL IN; End Diameter: 0.4820 INCHES MINIMUM AND 0.4860 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.