3990-01-500-4919 RAIL ASSY Index 5365-01-500-4921 SPACER,RING

National Stock Number:
5310-01-500-4920

Federal Supply Class:
5310

National Item Identification Number:
015004920

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:
1G04442H111F103UNITED TITANIUM, INC.
1G04442H1131442NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.058 INCHES MINIMUM AND 1.072 INCHES MAXIMUM
MATERIALTITANIUM ALLOY OVERALL
PERIPHERAL SHAPE STYLEROUND
PROPRIETARY CHARACTERISTICSPACS
OVERALL DIAMETER1.620 INCHES NOMINAL
SPECIAL FEATURESMATERIAL IS GRADE 23 TITANIUM PER ASTM B265
THICKNESS0.150 INCHES MINIMUM


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