The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-315-5660, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-315-5660 |
| Primary Part Number | 6310123 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First Step Diameter | 0.3600 INCHES NOMINAL IN |
| End Diameter | 0.2550 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35,TYPES 1,2,OR 6 FED SPEC SINGLE TREATMENT RESPONSE |
| Distance From End to First Step | 0.0270 INCHES MINIMUM AND 0.0330 INCHES MAXIMUM IN |
| Design Type | SPLIT |
| Material Document and Classification | QQ-S-763, CLASS 316 FED SPEC SINGLE MATERIAL RESPONSE |
| Counterbore Length | 0.0260 INCHES MINIMUM AND 0.0320 INCHES MAXIMUM IN |
| Counterbore Diameter | 0.1400 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 316 |
| 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 |
|---|---|
| 6310123 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6310123 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
NSN 5340-01-315-5660 is a Seat,helical Compression Spring, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-315-5660 has 1 manufacturer part number on file: 6310123 (Naval Sea Systems Command).
Key specifications for 6310123: Overall Height: 0.0720 INCHES MINIMUM AND 0.0780 INCHES MAXIMUM IN; First Step Diameter: 0.3600 INCHES NOMINAL IN; End Diameter: 0.2550 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35,TYPES 1,2,OR 6 FED SPEC SINGLE TREATMENT RESPONSE. 10 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.