The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-652-5141, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-00-652-5141 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| First Step Diameter | 1.4010 INCHES MINIMUM AND 1.4110 INCHES MAXIMUM IN |
| Material Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM |
| End Diameter | 1.0000 INCHES MINIMUM AND 1.0100 INCHES MAXIMUM IN |
| Second End Diameter | 0.9370 INCHES NOMINAL IN |
| Design Type | SOLID |
| Second Step Length | 0.0940 INCHES NOMINAL IN |
| Material Document and Classification | SAE 8640 ASSN STD SINGLE MATERIAL RESPONSE |
| Counterbore Length | 0.1250 INCHES NOMINAL IN |
| Second Step Diameter | 1.8750 INCHES NOMINAL IN |
| Counterbore Diameter | 0.6830 INCHES MINIMUM AND 0.6880 INCHES MAXIMUM IN |
| First Step Length | 0.0880 INCHES MINIMUM AND 0.0980 INCHES MAXIMUM IN |
| Bore Diameter | 0.5310 INCHES NOMINAL IN |
| Material | STEEL COMP 8640 |
| 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 |
|---|---|
| S749I215 | 3/9 Design control — primary reference Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc |
NSN 5340-00-652-5141 is a Seat,helical Compression Spring, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-00-652-5141: Overall Height: 0.5000 INCHES NOMINAL IN; First Step Diameter: 1.4010 INCHES MINIMUM AND 1.4110 INCHES MAXIMUM IN; Material Hardness Rating: 46.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM; End Diameter: 1.0000 INCHES MINIMUM AND 1.0100 INCHES MAXIMUM 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.