The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-175-9157, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-175-9157 |
| Primary Part Number | 75A430735-2001 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| First Step Diameter | 0.7900 INCHES MINIMUM AND 0.7950 INCHES MAXIMUM IN |
| End Diameter | 0.7200 INCHES MINIMUM AND 0.7250 INCHES MAXIMUM IN |
| Second End Diameter | 0.7200 INCHES MINIMUM AND 0.7250 INCHES MAXIMUM IN |
| Distance From End to First Step | 0.1450 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| First Step Length | 0.0450 INCHES NOMINAL IN |
| Bore Diameter | 0.6500 INCHES NOMINAL IN |
| Material | PLASTIC |
| 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 |
|---|---|
| 75A430735-2001 | Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk (GBR) |
| 75A430735-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| 75A430735-2001 | Triumph Aerospace Operations Uk, Ltd. Div Staverton Site (GBR) |
NSN 5340-01-175-9157 is a Seat,helical Compression Spring, manufactured by The Boeing Company Div Defense, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-175-9157 has 3 manufacturer part numbers on file: 75A430735-2001 (Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk), 75A430735-2001 (The Boeing Company Div Defense), 75A430735-2001 (Triumph Aerospace Operations Uk, Ltd. Div Staverton Site).
Key specifications for 75A430735-2001: Overall Height: 0.2400 INCHES NOMINAL IN; First Step Diameter: 0.7900 INCHES MINIMUM AND 0.7950 INCHES MAXIMUM IN; End Diameter: 0.7200 INCHES MINIMUM AND 0.7250 INCHES MAXIMUM IN; Second End Diameter: 0.7200 INCHES MINIMUM AND 0.7250 INCHES MAXIMUM IN. 9 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.