Part Number: NAS1401-3C5

Alternate Part Number:
5310-00-357-1938

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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 DIAMETER0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM
PERIPHERAL SHAPE STYLERECTANGULAR
CENTER HOLE SHAPE STYLEROUND
THICKNESS0.160 INCHES NOMINAL
LENGTH0.430 INCHES MINIMUM AND 0.490 INCHES MAXIMUM
WIDTH ACROSS FLATS0.430 INCHES MINIMUM AND 0.490 INCHES MAXIMUM
SPECIAL FEATURES0.06 IN. RADIUS ALL CORNERS,0.160 IN. RADIUS ONE SIDE OF ONE END
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE OVERALL OR MIL-S-6721 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
SPECIFICATION/STANDARD DATA80205-NAS1401 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.