The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-680-3126, 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 6 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. 1 item shares 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 | 5340-00-680-3126 |
| Primary Part Number | 41174 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Triumph Engine Control Systems Llc |
| Status | ACTIVE |
| First Step Diameter | 0.5500 INCHES NOMINAL IN |
| Material Hardness Rating | 53.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM |
| End Diameter | 0.4050 INCHES MINIMUM AND 0.4150 INCHES MAXIMUM IN |
| Distance From End to First Step | 0.0640 INCHES MINIMUM AND 0.0700 INCHES MAXIMUM IN |
| Design Type | SOLID |
| Material | STEEL CORROSION RESISTING |
| 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 5340-00-680-3126 is a Seat,helical Compression Spring, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-680-3126 has 2 manufacturer part numbers on file: 41174 (Triumph Engine Control Systems Llc), 41174 (Goodrich Control Systems Gmbh).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-651-3738. Verify interchangeability with system specifications before substitution.
Key specifications for 41174: Overall Height: 0.1830 INCHES MINIMUM AND 0.1930 INCHES MAXIMUM IN; First Step Diameter: 0.5500 INCHES NOMINAL IN; Material Hardness Rating: 53.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM; End Diameter: 0.4050 INCHES MINIMUM AND 0.4150 INCHES MAXIMUM IN. 6 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.