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National Stock Number: 5365-01-115-6853
Federal Supply Class: 5365
National Item Identification Number: 011156853
Description: SPACER,STEPPED
Detail: A TUBULAR SHAPED ITEM WITH A ROUND OR HEXAGON PERIPHERAL SHAPE HAVING TWO FLAT BEARING SURFACES PERPENDICULAR TO THE AXIS OF THE CENTRALLY LOCATED HOLE. IT IS DESIGNED TO MAINTAIN A PREDETERMINED DISTANCE BETWEEN ASSEMBLED PARTS. THE ITEM MAY BE WITH OR WITHOUT FLANGE(S) OF ANY PERIPHERAL SHAPE. THE LENGTH MUST EXCEED 25 PERCENT OF THE OUTSIDE DIAMETER OR DISTANCE ACROSS PERIPHERAL FLATS. (WHEN THE LENGTH, OUTSIDE DIAMETER, AND/OR DISTANCE ACROSS PERIPHERAL FLATS ARE DESIGNATED AS A TOLERANCE, THE MAXIMUM DIMENSION WILL BE USED TO DETERMINE COMPLIANCE.) IT MUST HAVE ONE OR MORE INTERNAL STEPS (COUNTERBORES) AND/OR EXTERNAL STEPS ON EITHER OR BOTH BEARING SURFACES. EXCLUDES SPACER, OPTICAL ELEMENT. SEE ALSO WASHER, RECESSED AND WASHER, SHOULDERED AND RECESSED.
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Manufacturer Information:
1853440 | 03956 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
BODY OUTSIDE DIAMETER | 0.312 INCHES MAXIMUM | FIRST LEFT COUNTERBORE INSIDE DIAMETER | 0.203 INCHES MAXIMUM | FIRST RIGHT STEP WIDTH | 0.037 INCHES MINIMUM AND 0.047 INCHES MAXIMUM | MATERIAL DOCUMENT AND CLASSIFICATION | ASTMA581,TYPE 303,COND A ASSN STD SINGLE MATERIAL RESPONSE OR ASTMA582,TYPE 303,COND A ASSN STD SINGLE MATERIAL RESPONSE | MATERIAL | STEEL COMP 303 | OVERALL LENGTH | 0.125 INCHES NOMINAL | SECOND RIGHT STEP WIDTH | 0.015 INCHES MINIMUM AND 0.025 INCHES MAXIMUM | SURFACE TREATMENT | PASSIVATE |
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