The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-478-4831, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Luminescent Systems, Inc Dba Lsi Div Luminescent Systems, Inc, Ny. Government technical data includes 7 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 | 5340-01-478-4831 |
| Primary Part Number | 49-00259-001 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Luminescent Systems, Inc Dba Lsi Div Luminescent Systems, Inc, Ny |
| Status | ACTIVE |
| Flange Diameter | 0.370 INCHES NOMINAL IN |
| Flange Thickness | 0.030 INCHES NOMINAL IN |
| Body Outside Diameter | 0.287 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN |
| Style Designator | PARALLEL |
| Casehardening Indicator | NOT CASEHARDENED |
| Material | PLASTIC |
| End Hole Diameter | 0.250 INCHES NOMINAL 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 |
|---|---|
| 49-00259-001 PRIMARY | Luminescent Systems, Inc Dba Lsi Div Luminescent Systems, Inc, Ny (USA) |
NSN 5340-01-478-4831 is a Retainer,helical Compression Spr, manufactured by Luminescent Systems, Inc Dba Lsi Div Luminescent Systems, Inc, Ny, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-478-4831 has 1 manufacturer part number on file: 49-00259-001 (Luminescent Systems, Inc Dba Lsi Div Luminescent Systems, Inc, Ny).
Key specifications for 49-00259-001: Flange Diameter: 0.370 INCHES NOMINAL IN; Overall Height: 0.150 INCHES NOMINAL IN; Flange Thickness: 0.030 INCHES NOMINAL IN; Body Outside Diameter: 0.287 INCHES MINIMUM AND 0.290 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.