The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-300-6493, 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 13 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 | 5340-01-300-6493 |
| Primary Part Number | 5177815 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange Diameter | 1.557 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-A-8625, TYPE 2, CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE |
| Flange Thickness | 0.185 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN |
| Body Outside Diameter | 1.140 INCHES NOMINAL IN |
| Style Designator | PARALLEL |
| Mounting Hole Diameter | 0.061 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN |
| Body Inside Diameter | 0.950 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Lip Thickness | 0.125 INCHES NOMINAL IN |
| Bolt Circle Diameter | 0.869 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE |
| Material | ALUMINUM ALLOY 6061 |
| End Hole Diameter | 0.061 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 5177815 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5340-01-300-6493 is a Retainer,helical Compression Spr, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-300-6493 has 1 manufacturer part number on file: 5177815 (Naval Sea Systems Command).
Key specifications for 5177815: Flange Diameter: 1.557 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN; Overall Height: 0.312 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-A-8625, TYPE 2, CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE; Flange Thickness: 0.185 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN. 13 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.