5310-99-311-5100, WASHER,FLAT

4720-99-312-4347 HOSE ASSEMBLY,NONMETALLIC

National Stock Number:
5310-99-311-5100

Federal Supply Class:
5310

National Item Identification Number:
993115100

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:

PE21836

K0824

PEARSON ENGINEERING LIMITED

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
HOLE DIAMETER	70.000 MILLIMETERS MINIMUM AND 70.074 MILLIMETERS MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	EN10025 S275 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
PERIPHERAL SHAPE STYLE	ROUND
OUTSIDE LEFT CORNER CHAMFER ANGLE	45.0 DEGREES NOMINAL
OUTSIDE RIGHT CORNER CHAMFER ANGLE	45.0 DEGREES NOMINAL
OVERALL DIAMETER	119.60 MILLIMETERS MINIMUM AND 120.40 MILLIMETERS MAXIMUM
SPECIAL FEATURES	W/RADIAL THROUGH HOLE 11.9MM MIN DIA
SURFACE FINISH	3.2 MICROMETERS ALL SURFACES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	DEF STAN 03-20 NATIONAL SPEC ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENT	ZINC AND PASSIVATE OVERALL
THICKNESS	21.85 MILLIMETERS MINIMUM AND 22.15 MILLIMETERS MAXIMUM

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