The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-00-905-2444, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-905-2444 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Flange Diameter | 2.275 INCHES NOMINAL IN |
| FSC Application Data | MANIFOLD ASSY,HYDRAULIC SYSTEM,AIRCRAFT |
| Flange Thickness | 0.125 INCHES NOMINAL IN |
| Body Outside Diameter | 1.510 INCHES NOMINAL IN |
| Style Designator | PARALLEL |
| Material Document and Classification | QQ-S-763, CLASS 440 FED SPEC SINGLE MATERIAL RESPONSE |
| Body Inside Diameter | 1.310 INCHES NOMINAL IN |
| Outside Chamfer Angle in Deg | 45.0 |
| Casehardening Indicator | NOT CASEHARDENED |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 440A OR STEEL COMP 440B OR STEEL COMP 440C OR STEEL COMP 440F OR STEEL COMP 440FSE A |
| 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 |
| Reference | Meaning |
|---|---|
| 81701 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-00-905-2444 is a Retainer,helical Compression Spr, classified under FSC 5340, Hardware, Commercial. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4010-01-196-2954. Verify interchangeability with system specifications before substitution.
Key specifications for 5340-00-905-2444: Flange Diameter: 2.275 INCHES NOMINAL IN; Overall Height: 1.228 INCHES NOMINAL IN; FSC Application Data: MANIFOLD ASSY,HYDRAULIC SYSTEM,AIRCRAFT; Flange Thickness: 0.125 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.