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Part Number

Part Number:
NSN:
NIIN:
Item Name:
WASHER , FLAT

Definition:

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.

CAGE Information

Code Company
80205 NATIONAL AEROSPACE STANDARDS COMMITT

Federal Supply Class

Title

NUTS AND WASHERS

Inclusions:

INCLUDES LOCKNUTS; EYE NUTS; PLAIN NUTS; CASTELLATED NUTS; WING NUTS; PLATE NUTS; PUSH ON NUTS; CONCAVE AND CONVEX WASHERS; FLAT WASHERS; KEYED WASHERS; LOCK WASHERS; SHOULDERED WASHERS; SPLIT WASHERS.

Exclusions:

EXCLUDES BEARING THRUST WASHERS (FSC 3120); SHIMS (FSC 5365); RING SPACERS (FSC 5365); PLATE SPACERS (FSC 5365); LOCK RINGS (FSC 5365).

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
SFTT SURFACE TREATMENT ANODIZE OVERALL OR CHROMATE OVERALL
MATT MATERIAL ALUMINUM ALLOY 2024 OVERALL
AAGR CROSS-SECTIONAL SHAPE STYLE RECTANGULAR
ABMX CENTER HOLE SHAPE STYLE ROUND
MDCL MATERIAL DOCUMENT AND CLASSIFICATION WW-T-700/3 TYPE 1 TEMPER T3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL OR QQ-A-225/6 TEMPER T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
ZZZK SPECIFICATION/STANDARD DATA 80205-NAS42 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
ADAV OVERALL DIAMETER 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM
ABMW PERIPHERAL SHAPE STYLE ROUND
AAUB HOLE DIAMETER 0.256 INCHES MINIMUM AND 0.263 INCHES MAXIMUM
ABNM THICKNESS 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-A-8625 TYPE 1 MIL SPEC 1ST TREATMENT RESPONSE OVERALL OR MIL-C-5541 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
HUES COLOR GRAY OVERALL OR BLUE OVERALL

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