The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-470-8640, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 9 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-470-8640 |
| Primary Part Number | 92492 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Triumph Engine Control Systems Llc |
| Status | ACTIVE |
| First Step Diameter | 1.0000 INCHES NOMINAL IN |
| Material Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| End Diameter | 0.7950 INCHES MINIMUM AND 0.8050 INCHES MAXIMUM IN |
| Distance From End to First Step | 0.2370 INCHES MINIMUM AND 0.2380 INCHES MAXIMUM IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Surface Treatment | PASSIVATE |
| Bore Diameter | 0.6530 INCHES MINIMUM AND 0.6560 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 |
|---|---|
| 92492 PRIMARY | Triumph Engine Control Systems Llc (USA) |
NSN 5340-00-470-8640 is a Seat,helical Compression Spring, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-470-8640 has 1 manufacturer part number on file: 92492 (Triumph Engine Control Systems Llc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-00-678-7350, 6680-01-105-4203. Verify interchangeability with system specifications before substitution.
Key specifications for 92492: Overall Height: 0.2750 INCHES MINIMUM AND 0.2800 INCHES MAXIMUM IN; First Step Diameter: 1.0000 INCHES NOMINAL IN; Material Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM; End Diameter: 0.7950 INCHES MINIMUM AND 0.8050 INCHES MAXIMUM IN. 9 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.