5310-01-301-1868 WASHER,FLAT Index 5340-01-301-1870 CAP,PROTECTIVE,DUST AND MOISTURE

National Stock Number:
5310-01-301-1869

Federal Supply Class:
5310

National Item Identification Number:
013011869

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:
LD153-0040-001543999THE BOEING COMPANY
LD153-0040-00156W912MEG TECHNOLOGIES, INC.


Techincal Specification:
HOLE DIAMETER0.550 INCHES NOMINAL
OVERALL DIAMETER0.805 INCHES NOMINAL
MATERIALSTEEL COMP 302 OVERALL
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESMATERIAL: 302 CORROSION RESISTANT STEEL, LAMINATED SHIM STOCK PER MIL-S-22499, COMP 3, TYPE 1, CLASS 1
SPECIAL TEST FEATURESLAMINATION THICKNESS: .002"
THICKNESS0.032 INCHES NOMINAL


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