3120-01-280-6933, BEARING,WASHER,THRUST

National Stock Number:
3120-01-280-6933

Federal Supply Class:
3120

National Item Identification Number:
012806933

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:

61350-24074-101

78286

SIKORSKY AIRCRAFT CORPORATION

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
CORNER SHAPE	CHAMFERED FIRST INSIDE CORNER
CORNER SHAPE	ROUND THIRD OUTSIDE CORNER
CORNER SHAPE	SQUARE FIRST OUTSIDE CORNER
CORNER SHAPE	SQUARE FOURTH OUTSIDE CORNER
CORNER SHAPE	SQUARE SECOND INSIDE CORNER
CORNER SHAPE	SQUARE SECOND OUTSIDE CORNER
CROSS-SECTIONAL SHAPE STYLE	SHOULDERED
DIAMETER	2.2525 INCHES MINIMUM AND 2.2530 INCHES MAXIMUM
FLANGE THICKNESS	0.0620 INCHES MINIMUM AND 0.0720 INCHES MAXIMUM
HARDNESS RATING	33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
OUTSIDE DIAMETER	2.9850 INCHES NOMINAL
OVERALL THICKNESS	0.2680 INCHES MINIMUM AND 0.2700 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP E4340 OVERALL
SHANK OUTSIDE DIAMETER	2.5160 INCHES NOMINAL
STYLE DESIGNATOR	ROUND
SURFACE FINISH	20.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE SMALLEST OUTSIDE DIAMETER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE DIAMETER SURFACE OF BODY
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE LARGEST OUTSIDE DIAMETER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE RIGHT SIDE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE RIGHT SIDE OF FLANGE
SURFACE TREATMENT	OXIDE INSIDE DIAMETER SURFACE OF BODY
SURFACE TREATMENT	OXIDE LARGEST OUTSIDE DIAMETER
SURFACE TREATMENT	OXIDE RIGHT SIDE
SURFACE TREATMENT	OXIDE RIGHT SIDE OF FLANGE
SURFACE TREATMENT	OXIDE SMALLEST OUTSIDE DIAMETER

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