The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-140-3703, 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 Is Div Northrop Grumman Aeronautics Systems. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-140-3703 |
| Primary Part Number | 74A425040-2003 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| FSC Application Data | AIRCRAFT LANDING GEAR |
| Body Outside Diameter | 0.645 INCHES NOMINAL IN |
| Style Designator | IRREGULAR |
| Material Document and Classification | QQ-A-225/9, ALLOY 7075, T7351 FED SPEC SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.125 INCHES NOMINAL IN |
| Body Inside Diameter | 0.563 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| 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 | F |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 74A425040-2003 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| Reference | Meaning |
|---|---|
| 74A425040-2001 | 5/9 Secondary reference The Boeing Company Div Defense |
| 10112720 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A425040-2003 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 5340-01-140-3703 is a Retainer,helical Compression Spr, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-140-3703 has 1 manufacturer part number on file: 74A425040-2003 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems).
Key specifications for 74A425040-2003: Overall Height: 1.750 INCHES NOMINAL IN; FSC Application Data: AIRCRAFT LANDING GEAR; Body Outside Diameter: 0.645 INCHES NOMINAL IN; Style Designator: IRREGULAR. 8 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.