Product Details | FLAT WASHER

5310-01-251-4227 A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use SHIM. For items fabricated from ceramic or electrically rated materials by specification or industry standards use INSULATOR (1), WASHER. Excludes DISK, VALVE, graphite impregnated and lubricated items.

Part Alternates: 304244-002, 3042442, 304244-2, 5310-01-251-4227, 01-251-4227, 5310012514227, 304244002, 012514227

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 19 MAR 1987 01-251-4227

Drawings & Photos | NSN 5310-01-251-4227


Cross Reference | NSN 5310-01-251-4227

Part Number Cage Code Manufacturer
304244-002 29778 RAYTHEON TRAINING INC DBA HUGHES FLIGHT SIMULATION
304244-2 29778 RAYTHEON TRAINING INC DBA HUGHES FLIGHT SIMULATION

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Technical Data | NSN 5310-01-251-4227

Characteristic Specifications
MATERIAL ALUMINUM ALLOY 6061 OVERALL
SURFACE TREATMENT ANODIZE OVERALL
HOLE DIAMETER 0.255 INCHES MINIMUM AND 0.275 INCHES MAXIMUM
PERIPHERAL SHAPE STYLE 1 ROUND
OVERALL DIAMETER 1.312 INCHES NOMINAL
CENTER HOLE SHAPE STYLE 1 ROUND
CROSS-SECTIONAL SHAPE STYLE 1 RECTANGULAR
THICKNESS 0.090 INCHES NOMINAL

Restrictions/Controls & Freight Information | NSN 5310-01-251-4227

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information