The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-326-8981, 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 11 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 | 5340-01-326-8981 |
| Primary Part Number | 5820514 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange Diameter | 1.732 INCHES MINIMUM AND 1.737 INCHES MAXIMUM IN |
| FSC Application Data | AFTERBODY SECTION,TORPEDO MK50 |
| Surface Treatment Document and Classification | MIL-A-8625, TYPE 2, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE |
| Flange Thickness | 0.135 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.900 INCHES NOMINAL IN |
| Style Designator | PARALLEL |
| Material Document and Classification | QQ-A-225/8, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.119 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Surface Treatment | ANODIZE |
| Material | ALUMINUM ALLOY 6061 |
| 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 |
|---|---|
| 5820514 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5340-01-326-8981 is a Retainer,helical Compression Spr, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-326-8981 has 1 manufacturer part number on file: 5820514 (Naval Sea Systems Command).
Key specifications for 5820514: Flange Diameter: 1.732 INCHES MINIMUM AND 1.737 INCHES MAXIMUM IN; Overall Height: 0.225 INCHES NOMINAL IN; FSC Application Data: AFTERBODY SECTION,TORPEDO MK50; Surface Treatment Document and Classification: MIL-A-8625, TYPE 2, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE. 11 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.