3120-99-606-6927, BEARING,WASHER,THRUST

National Stock Number:
3120-99-606-6927

Federal Supply Class:
3120

National Item Identification Number:
996066927

Description:
BEARING,WASHER,THRUST

Detail:
An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also WASHER, FLAT and SPACER, SLEEVE.

Manufacturer Information:

B441978	K0378	ROLLS-ROYCE PLC
B441978 ZZ	K0378	ROLLS-ROYCE PLC

Techincal Specification:

DIAMETER	5.5050 INCHES MINIMUM AND 5.5100 INCHES MAXIMUM
CENTER HOLE SHAPE STYLE	ROUND
CORNER SHAPE	CHAMFERED FIRST INSIDE CORNER
CORNER SHAPE	CHAMFERED SECOND INSIDE CORNER
CORNER SHAPE	SQUARE FIRST OUTSIDE CORNER
CORNER SHAPE	SQUARE SECOND OUTSIDE CORNER
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
HARDNESS RATING	444.0 BRINELL STANDARD MINIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	BS S28 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
OUTSIDE DIAMETER	6.1400 INCHES NOMINAL
OVERALL THICKNESS	0.2330 INCHES MINIMUM AND 0.2350 INCHES MAXIMUM
SPECIAL FEATURES	0.065/0.075 IN. MIN/MAX FIRST AND SECOND INSIDE CORNER CHAMFER LG AT 45 DEG
STYLE DESIGNATOR	ROUND
SURFACE FINISH	125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH	125.0 MICROINCHES LARGEST OUTSIDE DIAMETER
SURFACE FINISH	32.0 MICROINCHES LEFT SIDE
SURFACE FINISH	32.0 MICROINCHES RIGHT SIDE

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