The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-290-7563, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Moog Military Aircraft Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-290-7563 |
| Primary Part Number | A83768-1 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Moog Military Aircraft Llc |
| Status | ACTIVE |
| FSC Application Data | AIRCRAFT HYDRAULIC,VACUUM,DEICING SYSTEMS |
| First Step Diameter | 0.7500 INCHES NOMINAL IN |
| End Diameter | 0.4100 INCHES NOMINAL IN |
| Second End Diameter | 0.4200 INCHES NOMINAL IN |
| Distance From End to First Step | 0.9700 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE |
| First Step Length | 0.0500 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE |
| Bore Diameter | 0.2180 INCHES NOMINAL IN |
| Material | STEEL COMP 630 |
| 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 |
|---|---|
| A83768-1 PRIMARY | Moog Military Aircraft Llc (USA) |
| Reference | Meaning |
|---|---|
| A83768-1 | 5/9 Secondary reference U.S. Government activity |
NSN 5340-01-290-7563 is a Seat,helical Compression Spring, manufactured by Moog Military Aircraft Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-290-7563 has 1 manufacturer part number on file: A83768-1 (Moog Military Aircraft Llc).
Key specifications for A83768-1: Overall Height: 1.2800 INCHES NOMINAL IN; FSC Application Data: AIRCRAFT HYDRAULIC,VACUUM,DEICING SYSTEMS; First Step Diameter: 0.7500 INCHES NOMINAL IN; End Diameter: 0.4100 INCHES NOMINAL 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.