5365-01-390-3379 PLUG,MACHINE THREAD Index 5330-01-390-3381 SEAL,PLAIN

National Stock Number:
5310-01-390-3380

Federal Supply Class:
5310

National Item Identification Number:
013903380

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:
87024A002880372MARINE CORPS
87024A0028K4629BOUGHTON ENGINEERING LIMITED


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER16.5 MILLIMETERS NOMINAL
PERIPHERAL SHAPE STYLEROUND
OUTSIDE RIGHT CORNER CHAMFER ANGLE45.0 DEGREES NOMINAL
OVERALL DIAMETER45.0 MILLIMETERS NOMINAL
THICKNESS10.0 MILLIMETERS NOMINAL


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