The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-374-6034, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Honeywell Aerospace Yeovil Div Aerospace -Yeovil. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-374-6034 |
| Primary Part Number | 2515W257 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Honeywell Aerospace Yeovil Div Aerospace -Yeovil |
| Status | ACTIVE |
| End Diameter | 0.4500 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-A-8625, TYPE 2, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE |
| Distance From End to First Step | 0.1575 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Material Document and Classification | QQ-A-250/11, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE |
| Counterbore Length | 0.1400 INCHES NOMINAL IN |
| Second Step Diameter | 1.6000 INCHES NOMINAL IN |
| Counterbore Diameter | 1.2650 INCHES NOMINAL IN |
| First Step Length | 0.1280 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE |
| Bore Diameter | 0.1600 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 |
| 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 |
|---|---|
| 2515W257 | Honeywell Aerospace Yeovil Div Aerospace -Yeovil (GBR) |
| Reference | Meaning |
|---|---|
| 2515W257 | 3/9 Design control — primary reference Garrett Corp Airsupply Co Div |
NSN 5340-01-374-6034 is a Seat,helical Compression Spring, manufactured by Honeywell Aerospace Yeovil Div Aerospace -Yeovil, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-374-6034 has 1 manufacturer part number on file: 2515W257 (Honeywell Aerospace Yeovil Div Aerospace -Yeovil).
Key specifications for 2515W257: Overall Height: 0.2950 INCHES MINIMUM AND 0.3000 INCHES MAXIMUM IN; End Diameter: 0.4500 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-A-8625, TYPE 2, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE; Distance From End to First Step: 0.1575 INCHES NOMINAL IN. 13 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.