5310-01-340-0239 NUT,PLAIN,RECTANGULAR Index 5310-01-340-0242 WASHER,FLAT

National Stock Number:
5310-01-340-0241

Federal Supply Class:
5310

National Item Identification Number:
013400241

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:
833467-00122915NORTHROP GRUMMAN CORP ELECTRONIC SYSTEMS DEFENSIVE SYSTEM DIV


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.105 INCHES MINIMUM AND 0.110 INCHES MAXIMUM
OVERALL DIAMETER0.166 INCHES MINIMUM AND 0.170 INCHES MAXIMUM
MATERIALSTEEL COMP 304 OVERALL
PERIPHERAL SHAPE STYLEDEE
WIDTH0.310 INCHES MINIMUM AND 0.315 INCHES MAXIMUM
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.015 INCHES MINIMUM AND 0.019 INCHES MAXIMUM


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