The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-180-7028, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Fairbanks Morse, Llc. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-180-7028 |
| Primary Part Number | 03730056 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Distance From End to First Step | 0.1910 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Counterbore Diameter | 2.3600 INCHES NOMINAL IN |
| Bore Diameter | 1.5600 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 |
| Unit of Issue | EA |
NSN 5340-01-180-7028 is a Seat,helical Compression Spring, manufactured by Fairbanks Morse, Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-180-7028 has 2 manufacturer part numbers on file: 03730056 (Fairbanks Morse, Llc), 4016.09 (L'orange Gmbh).
1 possible match (shared part number, not a government interchangeability claim): 6150-01-504-0786. Verify interchangeability with system specifications before substitution.
Key specifications for 03730056: Overall Height: 0.7100 INCHES NOMINAL IN; Distance From End to First Step: 0.1910 INCHES NOMINAL IN; Design Type: SOLID; Style Designator: SEAT. 6 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.