5310-00-181-6555 WASHER,FLAT Index 5310-00-181-6557 WASHER,FLAT

National Stock Number:
5310-00-181-6556

Federal Supply Class:
5310

National Item Identification Number:
001816556

Description:
NUT,SELF-LOCKING,EXTENDED WASHER

Detail:
A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery. An integral feature is incorporated for locking on the threads of a mating member.


Manufacturer Information:
55LH7896-6019L2ESNA, LLC
55LH7896-672962HARVARD INDUSTRIES INC
STSCD005-0698897LOCKHEED MARTIN CORP


Techincal Specification:
THREAD SERIESUNJF
NOMINAL THREAD SIZE0.375 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL COMP 8740 OR
STEEL COMP H11 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6323 ASSN STD 1ST MATERIAL RESPONSE OR
AMS 6485 ASSN STD 2ND MATERIAL RESPONSE OR
AMS 6487 ASSN STD 2ND MATERIAL RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING45.0 ROCKWELL C NOMINAL
NUT STYLEDOUBLE HEXAGON
WASHER OUTSIDE DIAMETER0.725 INCHES MAXIMUM
OVERALL HEIGHT0.505 INCHES MAXIMUM
WASHER THICKNESS0.031 INCHES MINIMUM
WIDTH ACROSS FLATS0.492 INCHES MINIMUM AND
0.502 INCHES MAXIMUM
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
LUBRICATIONSOLUBLE LUBRICANT
TEMP RATING-65.0 DEG FAHRENHEIT MINIMUM AND
450.0 DEG FAHRENHEIT MAXIMUM


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