The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-00-300-2256, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 10 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 | 5340-00-300-2256 |
| Primary Part Number | 68A450944-2001 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| FSC Application Data | STEER DAMPER,ACFT |
| Surface Treatment Document and Classification | PS13201, CLASS 1, TYPE 2, MCDONNELL DOUGLAS CORP MFR REF SINGLE TREATMENT RESPONSE |
| Body Outside Diameter | 0.670 INCHES MINIMUM AND 0.680 INCHES MAXIMUM IN |
| Style Designator | PARALLEL |
| Material Document and Classification | QQ-A-200/3, ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE |
| Body Inside Diameter | 0.622 INCHES MINIMUM AND 0.628 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Surface Treatment | ANODIZE |
| Material | ALUMINUM ALLOY 2024 |
| End Hole Diameter | 0.208 INCHES MINIMUM AND 0.218 INCHES MAXIMUM 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 |
|---|---|
| 68A450944-2001 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5340-00-300-2256 is a Retainer,helical Compression Spr, manufactured by The Boeing Company Div Defense, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-300-2256 has 1 manufacturer part number on file: 68A450944-2001 (The Boeing Company Div Defense).
Key specifications for 68A450944-2001: Overall Height: 0.590 INCHES NOMINAL IN; FSC Application Data: STEER DAMPER,ACFT; Surface Treatment Document and Classification: PS13201, CLASS 1, TYPE 2, MCDONNELL DOUGLAS CORP MFR REF SINGLE TREATMENT RESPONSE; Body Outside Diameter: 0.670 INCHES MINIMUM AND 0.680 INCHES MAXIMUM IN. 10 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.