The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-353-9950, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-00-353-9950 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| FSC Application Data | STARTERS,ENGINE,ELECTRICAL,EXCEPT AIRCRAFT |
| First Step Diameter | 1.0000 INCHES NOMINAL IN |
| End Diameter | 0.6870 INCHES NOMINAL IN |
| Distance From End to First Step | 0.1570 INCHES NOMINAL IN |
| Design Type | SOLID |
| Material Document and Classification | AISI 1010 ASSN STD SINGLE MATERIAL RESPONSE |
| Surface Treatment | ZINC |
| Bore Diameter | 0.5640 INCHES NOMINAL IN |
| Material | STEEL COMP 1010 |
| 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 |
|---|---|
| 1917079 | 5/9 Secondary reference General Motors Corp |
| 1917079 | C/1 Advisory reference — outside the item-of-supply concept Borgwarner Pds (anderson), L.l.c. |
| 1917079 | 3/9 Design control — primary reference General Motors Corp Delco Remy Div |
NSN 5340-00-353-9950 is a Seat,helical Compression Spring, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-00-353-9950: Overall Height: 0.2190 INCHES NOMINAL IN; FSC Application Data: STARTERS,ENGINE,ELECTRICAL,EXCEPT AIRCRAFT; First Step Diameter: 1.0000 INCHES NOMINAL IN; End Diameter: 0.6870 INCHES NOMINAL 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.