The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-127-7922, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-01-127-7922 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Countersink Angle in Deg | 45.0 |
| First Step Diameter | 0.5250 INCHES NOMINAL IN |
| End Diameter | 0.3500 INCHES NOMINAL IN |
| Seat Angle in Deg | 45.0 |
| Countersink Diameter | 0.3500 INCHES NOMINAL IN |
| Distance From End to First Step | 0.1500 INCHES NOMINAL IN |
| Design Type | SOLID |
| Material Document and Classification | QQ-C-465 ALLOY 642 FED SPEC SINGLE MATERIAL RESPONSE |
| Chamfer Angle in Deg | 45.0 |
| Material | COPPER ALLOY 642 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 717-702067-1 | 3/9 Design control — primary reference Mcdonnell Douglas Corp Mcdonnell Douglas Aerospace Opns West |
| 10112528 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 717-702067-1 | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company Div Defense |
NSN 5340-01-127-7922 is a Seat,helical Compression Spring, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-127-7922: Overall Height: 0.2500 INCHES NOMINAL IN; Countersink Angle in Deg: 45.0; First Step Diameter: 0.5250 INCHES NOMINAL IN; End Diameter: 0.3500 INCHES NOMINAL 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.