Part Number: SS4409-054

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CONDITION:
NS
SIKORSKY AIRCRAFT CORPORATION78286
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.318 INCHES MINIMUM AND 0.333 INCHES MAXIMUM
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
THICKNESS0.013 INCHES MINIMUM AND 0.019 INCHES MAXIMUM
OVERALL DIAMETER0.557 INCHES MINIMUM AND 0.582 INCHES MAXIMUM
MATERIALSTEEL COMP 301 OVERALL OR STEEL COMP 302 OVERALL OR STEEL COMP 304 OVERALL OR STEEL COMP 316 OVERALL OR STEEL COMP 321 OVERALL OR STEEL COMP 347 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE OVERALL OR MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE OVERALL OR MIL-S-5059 MIL SPEC 3RD MATERIAL RESPONSE OVERALL OR MIL-S-5059 MIL SPEC 4TH MATERIAL RESPONSE OVERALL OR AMS 5510 ASSN STD 5TH MATERIAL RESPONSE OVERALL OR AMS 5512 ASSN STD 6TH MATERIAL RESPONSE OVERALL
SURFACE TREATMENTOXIDE FILM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
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.