Part Number: NAS1252-816H

Alternate Part Number:
5310-01-326-0541

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CONDITION:
NS
WASHER,FLAT,
NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE80205
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
THICKNESS0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM
OVERALL DIAMETER0.870 INCHES MINIMUM AND 0.995 INCHES MAXIMUM
COLORYELLOW OVERALL
MATERIALALUMINUM ALLOY 7075 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/12 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SPECIFICATION/STANDARD DATA80205-NAS1252 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
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 ( .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 . 6 inches ( .15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be . 16 inches ( .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.