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National Stock Number:
5365-01-225-3257
Federal Supply Class:
5365
National Item Identification Number:
012253257
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:
| 9326004 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| BODY INSIDE DIAMETER | 0.250 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 0.635 INCHES NOMINAL | | FIRST LEFT COUNTERBORE DEPTH | 0.214 INCHES NOMINAL | | FIRST LEFT COUNTERBORE INSIDE DIAMETER | 0.375 INCHES NOMINAL | | FIRST RIGHT COUNTERBORE INSIDE DIAMETER | 0.300 INCHES NOMINAL | | FIRST RIGHT COUNTERBORE DEPTH | 0.156 INCHES NOMINAL | | LEFT KEYWAY DEPTH | 0.460 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/5 2017-T4 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 2017 | | SPECIAL FEATURES | LARGE END FLAT O.558 ACROSS DIA; SMALL END FLAT 0.402 ACROSS DIA; AXIALHOLE OPPOSITE FLAT SMALL END 0.055 DIAX 0.150 DEEP | | SURFACE FINISH | 125.0 MICROINCHES OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-STD-171 7.3.1 MIL STD SINGLE TREATMENT RESPONSE | | SURFACE TREATMENT | ANODIZE |
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