The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-391-3674, 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 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-391-3674 |
| Primary Part Number | 803-6397420-47 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange Diameter | 5.5000 INCHES NOMINAL IN |
| Flange Thickness | 0.1875 INCHES NOMINAL IN |
| Body Outside Diameter | 3.5100 INCHES MINIMUM AND 3.5200 INCHES MAXIMUM IN |
| Style Designator | IRREGULAR |
| Body Inside Diameter | 1.9000 INCHES MINIMUM AND 1.9060 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Material | PLASTIC |
| 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 |
|---|---|
| 803-6397420-47 PRIMARY | Naval Sea Systems Command (USA) |
| 803-6397420 PIECE 47 | Naval Sea Systems Command (USA) |
NSN 5340-01-391-3674 is a Retainer,helical Compression Spr, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-391-3674 has 2 manufacturer part numbers on file: 803-6397420-47 (Naval Sea Systems Command), 803-6397420 PIECE 47 (Naval Sea Systems Command).
Key specifications for 803-6397420-47: Flange Diameter: 5.5000 INCHES NOMINAL IN; Overall Height: 1.2500 INCHES NOMINAL IN; Flange Thickness: 0.1875 INCHES NOMINAL IN; Body Outside Diameter: 3.5100 INCHES MINIMUM AND 3.5200 INCHES MAXIMUM IN. 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.