The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-171-3966, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-171-3966 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| First Step Diameter | 0.3070 INCHES MINIMUM AND 0.3080 INCHES MAXIMUM IN |
| End Diameter | 0.2150 INCHES MINIMUM AND 0.2250 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-A-8625, TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE |
| Distance From End to First Step | 0.1230 INCHES MINIMUM AND 0.1270 INCHES MAXIMUM IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Material Document and Classification | QQ-A-225/6, ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE |
| Counterbore Length | 0.1290 INCHES MINIMUM AND 0.1310 INCHES MAXIMUM IN |
| Counterbore Diameter | 0.2430 INCHES MINIMUM AND 0.2450 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE |
| Bore Diameter | 0.1410 INCHES MINIMUM AND 0.1420 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2024 |
| 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 |
| Reference | Meaning |
|---|---|
| 236557-1 | 3/2 Design control — primary reference U.S. Government activity |
| 2365571-1 | 5/1 Secondary reference Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations |
NSN 5340-01-171-3966 is a Seat,helical Compression Spring, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-171-3966: Overall Height: 0.3250 INCHES NOMINAL IN; First Step Diameter: 0.3070 INCHES MINIMUM AND 0.3080 INCHES MAXIMUM IN; End Diameter: 0.2150 INCHES MINIMUM AND 0.2250 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-A-8625, TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE. 12 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.