The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-360-7676, 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 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-360-7676 |
| Primary Part Number | A78140-1 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Moog Military Aircraft Llc |
| Status | ACTIVE |
| First Step Diameter | 0.7300 INCHES MINIMUM AND 0.7350 INCHES MAXIMUM IN |
| End Diameter | 0.5300 INCHES MINIMUM AND 0.5350 INCHES MAXIMUM IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Material Document and Classification | QQ-S-763, CLASS 440 FED SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 440A OR STEEL COMP 440B OR STEEL COMP 440C OR STEEL COMP 440F OR STEEL COMP 440FSE A |
| 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 |
|---|---|
| A78140-1 PRIMARY | Moog Military Aircraft Llc (USA) |
| Reference | Meaning |
|---|---|
| A78140-1 | 5/9 Secondary reference U.S. Government activity |
NSN 5340-01-360-7676 is a Seat,helical Compression Spring, manufactured by Moog Military Aircraft Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-360-7676 has 1 manufacturer part number on file: A78140-1 (Moog Military Aircraft Llc).
Key specifications for A78140-1: Overall Height: 0.2700 INCHES NOMINAL IN; First Step Diameter: 0.7300 INCHES MINIMUM AND 0.7350 INCHES MAXIMUM IN; End Diameter: 0.5300 INCHES MINIMUM AND 0.5350 INCHES MAXIMUM IN; Design Type: SOLID. 7 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.