3020-00-996-3217 GEAR,WORM Index 5340-00-996-3220 STANDOFF,THREADED,SPACING

National Stock Number:
5310-00-996-3218

Federal Supply Class:
5310

National Item Identification Number:
009963218

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:
MS15795-80180205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
MS15795-80196906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.078 INCHES NOMINAL
OVERALL DIAMETER0.187 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 304 OVERALL
NONDEFINITIVE SPEC/STD DATAA TYPE AND 1 GRADE AND B CLASS
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESAS MOD BY CLASS AND CONDITION
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.016 INCHES MINIMUM AND 0.025 INCHES MAXIMUM


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