The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-429-4111, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Dresser, Llc. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-00-429-4111 |
| Primary Part Number | 118426 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Dresser, Llc |
| Status | ACTIVE |
| First Step Diameter | 1.7500 INCHES NOMINAL IN |
| End Diameter | 1.2500 INCHES NOMINAL IN |
| Countersink Diameter | 1.0620 INCHES NOMINAL IN |
| Distance From End to First Step | 0.0810 INCHES MINIMUM AND 0.2060 INCHES MAXIMUM IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Counterbore Length | 0.4050 INCHES NOMINAL IN |
| Second Step Diameter | 2.2500 INCHES NOMINAL IN |
| Counterbore Diameter | 0.5310 INCHES NOMINAL IN |
| Second Counterbore Length | 0.1880 INCHES NOMINAL IN |
| Second Counterbore Diameter | 1.2500 INCHES NOMINAL IN |
| First Step Length | 0.1560 INCHES NOMINAL IN |
| Bore Diameter | 0.5310 INCHES NOMINAL IN |
| Material | IRON |
| 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 |
|---|---|
| 118426 PRIMARY | Dresser, Llc (USA) |
NSN 5340-00-429-4111 is a Seat,helical Compression Spring, manufactured by Dresser, Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-429-4111 has 1 manufacturer part number on file: 118426 (Dresser, Llc).
Key specifications for 118426: Overall Height: 0.4690 INCHES NOMINAL IN; First Step Diameter: 1.7500 INCHES NOMINAL IN; End Diameter: 1.2500 INCHES NOMINAL IN; Countersink Diameter: 1.0620 INCHES NOMINAL IN. 14 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.