The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-353-8745, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Eaton Corp Dba Eaton Aerospace Jackson. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-00-353-8745 |
| Primary Part Number | SR240 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Eaton Corp Dba Eaton Aerospace Jackson |
| Status | ACTIVE |
| First Step Diameter | 1.2188 INCHES NOMINAL IN |
| End Diameter | 0.6875 INCHES NOMINAL IN |
| Distance From End to First Step | 0.5312 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Second Step Diameter | 1.6250 INCHES NOMINAL IN |
| Bore Taper in Deg | 10.0 |
| First Step Length | 0.0938 INCHES NOMINAL IN |
| Chamfer Angle in Deg | 10.0 |
| Bore Diameter | 0.6250 INCHES NOMINAL IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SR240 PRIMARY | Eaton Corp Dba Eaton Aerospace Jackson (USA) |
| K600I219 | John Reiner & Co. Inc. (USA) |
| Reference | Meaning |
|---|---|
| K600I219 | 5/9 Secondary reference Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc |
| K600I00219 | 5/9 Secondary reference Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc |
NSN 5340-00-353-8745 is a Seat,helical Compression Spring, manufactured by Eaton Corp Dba Eaton Aerospace Jackson, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-353-8745 has 2 manufacturer part numbers on file: SR240 (Eaton Corp Dba Eaton Aerospace Jackson), K600I219 (John Reiner & Co. Inc.).
Key specifications for SR240: Overall Height: 0.7188 INCHES NOMINAL IN; First Step Diameter: 1.2188 INCHES NOMINAL IN; End Diameter: 0.6875 INCHES NOMINAL IN; Distance From End to First Step: 0.5312 INCHES NOMINAL IN. 11 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.