The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-220-3229, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Pneudraulics, Inc.. Government technical data includes 12 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-220-3229 |
| Primary Part Number | 71426 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Pneudraulics, Inc. |
| Status | ACTIVE |
| First Step Diameter | 0.9350 INCHES MINIMUM AND 0.9400 INCHES MAXIMUM IN |
| End Diameter | 0.4280 INCHES NOMINAL IN |
| Second End Diameter | 0.4220 INCHES MINIMUM AND 0.4222 INCHES MAXIMUM IN |
| Distance From End to First Step | 0.0800 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Counterbore Length | 0.2120 INCHES NOMINAL IN |
| Counterbore Diameter | 0.4221 INCHES NOMINAL IN |
| First Step Length | 0.0600 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE |
| Bore Diameter | 0.3120 INCHES MINIMUM AND 0.3122 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 71426 PRIMARY | Pneudraulics, Inc. (USA) |
NSN 5340-00-220-3229 is a Seat,helical Compression Spring, manufactured by Pneudraulics, Inc., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-220-3229 has 1 manufacturer part number on file: 71426 (Pneudraulics, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 6625-01-379-4715, 5310-01-590-2492. Verify interchangeability with system specifications before substitution.
Key specifications for 71426: Overall Height: 0.4070 INCHES NOMINAL IN; First Step Diameter: 0.9350 INCHES MINIMUM AND 0.9400 INCHES MAXIMUM IN; End Diameter: 0.4280 INCHES NOMINAL IN; Second End Diameter: 0.4220 INCHES MINIMUM AND 0.4222 INCHES MAXIMUM IN. 12 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.