The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-573-7036, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Proponent, Inc. Dba Proponent Div Proponent Manufacturing. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-573-7036 |
| Primary Part Number | 4549347 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Proponent, Inc. Dba Proponent Div Proponent Manufacturing |
| Status | ACTIVE |
| Style Designator | SEAT |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 4549347 | Proponent, Inc. Dba Proponent Div Proponent Manufacturing (USA) |
| 4549247 | Kitco Llc (USA) |
| 4549247 | Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company (USA) |
| 4549247 | United Aeronautical Corporation Dba United Aeronautical Corp (USA) |
| Reference | Meaning |
|---|---|
| 4549247 | 5/9 Secondary reference Consolidated Aeronautics Corp |
| 4549347 | 3/2 Design control — primary reference U.S. Government activity |
| 4549347 | 5/9 Secondary reference The Boeing Company |
NSN 5340-00-573-7036 is a Seat,helical Compression Spring, manufactured by Proponent, Inc. Dba Proponent Div Proponent Manufacturing, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-573-7036 has 4 manufacturer part numbers on file: 4549347 (Proponent, Inc. Dba Proponent Div Proponent Manufacturing), 4549247 (Kitco Llc), 4549247 (Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company), 4549247 (United Aeronautical Corporation Dba United Aeronautical Corp).
Key specifications for 4549347: Style Designator: SEAT; Material: ALUMINUM ALLOY. 2 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.