5310-01-266-5381 NUT,SELF-LOCKING,PLATE Index 5310-01-266-5383 WASHER,FLAT

National Stock Number:
5310-01-266-5382

Federal Supply Class:
5310

National Item Identification Number:
012665382

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:
SM-B-70773680063US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER2.600 INCHES NOMINAL
OVERALL DIAMETER2.980 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/8 MIL STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 5052 OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.003 INCHES NOMINAL
SPECIFICATION/STANDARD DATA80063-SM-B-707736 GOVERNMENT STANDARD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072 MIL STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCHROMATE OVERALL


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