Part Number: 206-040-329-3

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CONDITION:
NS
BELL HELICOPTER TEXTRON INC.97499
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.252 INCHES MINIMUM AND 0.258 INCHES MAXIMUM
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
THICKNESS0.063 INCHES NOMINAL
OVERALL DIAMETER0.495 INCHES MINIMUM AND 0.520 INCHES MAXIMUM
III MINIMUM TENSILE STRENGTH55000 POUNDS PER SQUARE INCH
SURFACE FINISH32.0 MICROINCHES BOTTOM
MATERIALSTEEL OVERALL OR STEEL COMP 1018 OVERALL OR STEEL COMP 4130 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7952 MIL SPEC 1ST MATERIAL RESPONSE OVERALL AND AISI ASSN STD 2ND MATERIAL RESPONSE OVERALL AND MIL-S-18729,COND N MIL SPEC 3RD MATERIAL RESPONSE OVERALL
SPECIAL FEATURES100 DEG,REAMER 0.313 IN. DIA, STRAIGHT FLUTE,0.250 IN. TAPER PER FT,7/16-20 THD SHANK,0.500 IN. LG,HIGH SPEED STEEL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.252 INCHES MINIMUM AND 0.258 INCHES MAXIMUM
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
THICKNESS0.063 INCHES NOMINAL
OVERALL DIAMETER0.495 INCHES MINIMUM AND 0.520 INCHES MAXIMUM
III MINIMUM TENSILE STRENGTH55000 POUNDS PER SQUARE INCH
SURFACE FINISH32.0 MICROINCHES BOTTOM
MATERIALSTEEL OVERALL OR STEEL COMP 1018 OVERALL OR STEEL COMP 4130 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7952 MIL SPEC 1ST MATERIAL RESPONSE OVERALL AND AISI ASSN STD 2ND MATERIAL RESPONSE OVERALL AND MIL-S-18729,COND N MIL SPEC 3RD MATERIAL RESPONSE OVERALL
SPECIAL FEATURES100 DEG,REAMER 0.313 IN. DIA, STRAIGHT FLUTE,0.250 IN. TAPER PER FT,7/16-20 THD SHANK,0.500 IN. LG,HIGH SPEED STEEL
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.