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National Stock Number:
5365-01-397-0335
Federal Supply Class:
5365
National Item Identification Number:
013970335
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:
| 1576AS345-1 | 05728 | TIFFEN MANUFACTURING CORP DBA TIFFEN ACQUISITION LLC | | 1576AS345-1 | 30003 | NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER |
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Techincal Specification:
| BODY INSIDE DIAMETER | 2.798 INCHES MINIMUM AND 2.803 INCHES MAXIMUM | | BODY OUTSIDE DIAMETER | 3.135 INCHES MINIMUM AND 3.140 INCHES MAXIMUM | | FIRST LEFT COUNTERBORE DEPTH | 0.235 INCHES MINIMUM AND 0.240 INCHES MAXIMUM | | FIRST LEFT COUNTERBORE INSIDE DIAMETER | 77.0 MILLIMETERS NOMINAL | | FIRST RIGHT STEP WIDTH | 0.060 INCHES NOMINAL | | MATERIAL | ALUMINUM | | OVERALL LENGTH | 0.355 INCHES NOMINAL | | RIGHT KEYWAY DEPTH | 0.020 INCHES NOMINAL | | SECOND LEFT COUNTERBORE INSIDE DIAMETER | 2.920 INCHES MINIMUM AND 2.925 INCHES MAXIMUM | | SECOND LEFT COUNTERBORE DEPTH | 0.055 INCHES NOMINAL | | SPECIAL FEATURES | OUTSIDE EDGE KNURLED | | SURFACE TREATMENT | ANODIZE |
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