The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-302-1677, 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 13 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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-302-1677 |
| Primary Part Number | 68A450936-2001 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Countersink Angle in Deg | 90.0 |
| FSC Application Data | STEER DAMPER,ACFT |
| First Step Diameter | 0.7200 INCHES NOMINAL IN |
| End Diameter | 0.5700 INCHES MINIMUM AND 0.5800 INCHES MAXIMUM IN |
| Countersink Diameter | 0.2930 INCHES NOMINAL IN |
| Distance From End to First Step | 0.1200 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Material Document and Classification | QQ-A-200/3, ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | ANODIZE |
| Spherical Seat Top Radius | 0.0440 INCHES NOMINAL IN |
| Bore Diameter | 0.1850 INCHES MINIMUM AND 0.1950 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2024 |
| 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 |
|---|---|
| 68A450936-2001 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5340-00-302-1677 is a Seat,helical Compression Spring, manufactured by The Boeing Company Div Defense, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-302-1677 has 1 manufacturer part number on file: 68A450936-2001 (The Boeing Company Div Defense).
Key specifications for 68A450936-2001: Overall Height: 0.2100 INCHES NOMINAL IN; Countersink Angle in Deg: 90.0; FSC Application Data: STEER DAMPER,ACFT; First Step Diameter: 0.7200 INCHES NOMINAL IN. 13 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.