2540-01-178-9946 LADDER,VEHICLE BOARDING Index 3020-01-178-9949 SPROCKET WHEEL

National Stock Number:
3020-01-178-9947

Federal Supply Class:
3020

National Item Identification Number:
011789947

Description:
PULLEY,TIMING BELT

Detail:
A PULLEY WITH REGULARLY SPACED GROOVES PARALLEL TO THE PULLEY AXIS ON THE FACE. IT IS DESIGNED TO BE USED FOR TIMING PURPOSES SUCH AS TO SYNCHRONIZE THE IGINTION SPARK WITH THE COMPLETION OF THE COMPRESSION STROKE OF THE PISTON.


Manufacturer Information:
554781-13B150RAYTHEON COMPANY
554781-149956RAYTHEON COMPANY
554781-154X10RAYTHEON COMPANY


Techincal Specification:
BORE DIAMETER0.625 INCHES NOMINAL
BORE TYPESPECIFIED
FACE TYPEFLAT GROOVED WITH DOUBLE FLANGE
FACE WIDTH0.377 INCHES MINIMUM AND 0.379 INCHES MAXIMUM
FACE GROOVE/TOOTH QUANTITY41
HUB DIAMETER0.880 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM STD B211,T6 ASSN STD SINGLE MATERIAL RESPONSE
MATERIALALUMINUM ALLOY 6061
OVERALL LENGTH0.958 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE II,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE
SURFACE TREATMENTANODIZE


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