1560-01-448-2851 PLATE,STRUCTURAL,AIRCRAFT Index 2040-01-448-2853 SECURING DEVICE

National Stock Number:
5310-01-448-2852

Federal Supply Class:
5310

National Item Identification Number:
014482852

Description:
WASHER,FLAT

Detail:
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.


Manufacturer Information:
MS14226-64C1096906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
MATERIALSTEEL COMP 301 OR
STEEL COMP 302 OR
STEEL COMP 304 OR
STEEL COMP 316 OR
STEEL COMP 321 OR
STEEL COMP 347 OR
STEEL COMP 348 OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.433 INCHES MINIMUM AND
0.458 INCHES MAXIMUM
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER0.219 INCHES MINIMUM AND
0.224 INCHES MAXIMUM
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.057 INCHES MINIMUM AND
0.069 INCHES MAXIMUM
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCEMS14226-64C10


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