5305-00-895-6248 SETSCREW Index 5310-00-895-6250 NUT,PLAIN,HEXAGON

National Stock Number:
5310-00-895-6249

Federal Supply Class:
5310

National Item Identification Number:
008956249

Description:
WASHER,FLAT

Detail:
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.


Manufacturer Information:
4M36-0103076301THE BOEING COMPANY
51309045934ONTIC ENGINEERING & MANUFACTURING, INC
51309073030HAMILTON SUNDSTRAND CORPORATION


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING83.0 ROCKWELL B MINIMUM
HOLE DIAMETER0.174 INCHES NOMINAL
OVERALL DIAMETER0.500 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4045,TEMPER T6 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 7075 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2470 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
THICKNESS0.062 INCHES NOMINAL


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