The Washer,key, cataloged under National Stock Number 5310-00-005-5756, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Curtiss-Wright Emd. Government technical data includes 12 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.
| Parameter | Value |
|---|---|
| NSN | 5310-00-005-5756 |
| Primary Part Number | 160A552H01 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Curtiss-Wright Emd |
| Status | ACTIVE |
| External Straight Key Length | 0.187 INCHES NOMINAL IN |
| Special Test Features | SPECIAL QUALITY CONTROL TESTING |
| Overall Distance Including Keys | 0.869 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.547 INCHES MINIMUM AND 0.577 INCHES MAXIMUM IN |
| Peening Key Length | 0.196 INCHES NOMINAL IN |
| Material Thickness | 0.025 INCHES NOMINAL IN |
| External Straight Key Width | 0.187 INCHES NOMINAL IN |
| Test Data Document | 81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | STEEL COMP 304 OVERALL |
| Hole Diameter | 0.391 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 160A552H01 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Curtiss-Wright Emd (USA) |
NSN 5310-00-005-5756 is a Washer,key, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Curtiss-Wright Emd, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-005-5756 has 1 manufacturer part number on file: 160A552H01 (Curtiss-Wright Electro-Mechanical Corporation Div Curtiss-Wright Emd).
Key specifications for 160A552H01: External Straight Key Length: 0.187 INCHES NOMINAL IN; Special Test Features: SPECIAL QUALITY CONTROL TESTING; Overall Distance Including Keys: 0.869 INCHES NOMINAL IN; Style Designator: KEY. 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.