3020-00-517-1882 GEAR,HELICAL Index 3020-00-517-1887 GEAR,SPUR

National Stock Number:
5310-00-517-1886

Federal Supply Class:
5310

National Item Identification Number:
005171886

Description:
NUT,SELF-LOCKING,EXTENDED WASHER

Detail:
A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery. An integral feature is incorporated for locking on the threads of a mating member.


Manufacturer Information:
517188619204ARMY, UNITED STATES DEPARTMENT OF THE


Techincal Specification:
THREAD SERIESUN
NOMINAL THREAD SIZE2.250 INCHES
THREAD QUANTITY PER INCH12
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL OVERALL
SURFACE TREATMENTPHOSPHATE OVERALL
HARDNESS RATING27.0 ROCKWELL C NOMINAL
NUT STYLEHEXAGON
WASHER OUTSIDE DIAMETER4.047 INCHES MINIMUM AND
4.078 INCHES MAXIMUM
OVERALL HEIGHT2.172 INCHES MINIMUM AND
2.203 INCHES MAXIMUM
WASHER THICKNESS0.234 INCHES MINIMUM AND
0.266 INCHES MAXIMUM
WIDTH ACROSS FLATS3.484 INCHES MINIMUM AND
3.500 INCHES MAXIMUM
LOCKING FEATUREFREE-RUNNING ALL METAL DESIGN
SPECIAL FEATURESSIX EQUALLY SPACED SLOTS LOCATED THROUGH HEX FLATS


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