5305-00-452-1550 SCREW,MACHINE Index 1560-00-452-1552 SKIN,AIRCRAFT

National Stock Number:
5310-00-452-1551

Federal Supply Class:
5310

National Item Identification Number:
004521551

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:
99-603727499995NATO STOCK NUMBER ASSIGNED BY ANOTHER NATION
F28408603950NAVAL INVENTORY CONTROL POINT MECHANICSBURG
F284086K0289BRITISH AEROSPACE MILITARY AIRCRAFT & AEROSTRUCTURES
F284086U9143BAE SYSTEMS (OPERATIONS) LIMITED


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.438 INCHES NOMINAL
OVERALL DIAMETER1.500 INCHES NOMINAL
MATERIALRUBBER NATURAL OR RUBBER SYNTHETIC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.031 INCHES NOMINAL


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