The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-051-9820, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Army, United States Department of the Dba Watervliet Arsenal Div Business Development. Government technical data includes 12 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 | 5340-01-051-9820 |
| Primary Part Number | 11579005 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Army, United States Department of the Dba Watervliet Arsenal Div Business Development |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE |
| Body Outside Diameter | 1.440 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN |
| Style Designator | IRREGULAR |
| Mounting Hole Diameter | 0.190 INCHES NOMINAL IN |
| Inside Chamfer Depth | 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Body Inside Diameter | 1.125 INCHES NOMINAL IN |
| Outside Chamfer Angle in Deg | 7.0 |
| Casehardening Indicator | NOT CASEHARDENED |
| Surface Treatment | ANODIZE |
| Material | ALUMINUM ALLOY 6061 |
| Outside Chamfer Depth | 0.123 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| End Hole Diameter | 0.718 INCHES MINIMUM AND 0.723 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 |
|---|---|
| 11579005 PRIMARY | Army, United States Department of the Dba Watervliet Arsenal Div Business Development (USA) |
NSN 5340-01-051-9820 is a Retainer,helical Compression Spr, manufactured by Army, United States Department of the Dba Watervliet Arsenal Div Business Development, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-051-9820 has 1 manufacturer part number on file: 11579005 (Army, United States Department of the Dba Watervliet Arsenal Div Business Development).
Key specifications for 11579005: Overall Height: 0.710 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE; Body Outside Diameter: 1.440 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN; Style Designator: IRREGULAR. 12 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.