The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-487-5761, 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 9 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 | 5340-01-487-5761 |
| Primary Part Number | 122-6818601 PC 42 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Countersink Angle in Deg | 0.0 |
| First Step Diameter | 3.0000 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Material Document and Classification | AISI C1018 ASSN STD SINGLE MATERIAL RESPONSE |
| Counterbore Length | 0.1875 INCHES NOMINAL IN |
| Counterbore Diameter | 1.2810 INCHES NOMINAL IN |
| Chamfer Angle in Deg | 0.0 |
| Material | STEEL COMP 1018 |
| 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 |
|---|---|
| 122-6818601 PC 42 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5340-01-487-5761 is a Seat,helical Compression Spring, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-487-5761 has 1 manufacturer part number on file: 122-6818601 PC 42 (Naval Sea Systems Command).
Key specifications for 122-6818601 PC 42: Overall Height: 0.5625 INCHES NOMINAL IN; Countersink Angle in Deg: 0.0; First Step Diameter: 3.0000 INCHES NOMINAL IN; Design Type: SOLID. 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.