The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-067-8342, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. 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 | 5340-01-067-8342 |
| Primary Part Number | 740379-2 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Flange Diameter | 0.600 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | HS248 CL 42,TY A1 FSCM 73030 MFR REF SINGLE TREATMENT RESPONSE |
| Flange Thickness | 0.592 INCHES MINIMUM AND 0.602 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.500 INCHES NOMINAL IN |
| Style Designator | PARALLEL |
| Material Document and Classification | HS279 FSCM 73030 MFR REF SINGLE MATERIAL RESPONSE |
| Body Inside Diameter | 0.421 INCHES NOMINAL IN |
| Outside Chamfer Angle in Deg | 45.0 |
| Casehardening Indicator | NOT CASEHARDENED |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 630 |
| 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 |
|---|---|
| 740379-2 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 5340-01-067-8342 is a Retainer,helical Compression Spr, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-067-8342 has 1 manufacturer part number on file: 740379-2 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 740379-2: Flange Diameter: 0.600 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN; Overall Height: 0.627 INCHES MINIMUM AND 0.632 INCHES MAXIMUM IN; Surface Treatment Document and Classification: HS248 CL 42,TY A1 FSCM 73030 MFR REF SINGLE TREATMENT RESPONSE; Flange Thickness: 0.592 INCHES MINIMUM AND 0.602 INCHES MAXIMUM 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.