The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-141-6141, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple. 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 | 5340-01-141-6141 |
| Primary Part Number | 028-000483 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple |
| Status | ACTIVE |
| Flange Diameter | 0.906 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE |
| Flange Thickness | 0.219 INCHES NOMINAL IN |
| Body Outside Diameter | 0.531 INCHES NOMINAL IN |
| Style Designator | IRREGULAR |
| Material Document and Classification | QQ-A-282, T6 FED SPEC SINGLE MATERIAL RESPONSE |
| Body Inside Diameter | 0.406 INCHES MINIMUM AND 0.412 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Bolt Circle Diameter | 0.687 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE |
| Material | ALUMINUM ALLOY 7075 |
| 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 |
|---|---|
| 028-000483 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA) |
NSN 5340-01-141-6141 is a Retainer,helical Compression Spr, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-141-6141 has 1 manufacturer part number on file: 028-000483 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple).
Key specifications for 028-000483: Flange Diameter: 0.906 INCHES NOMINAL IN; Overall Height: 1.000 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE; Flange Thickness: 0.219 INCHES NOMINAL IN. 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.