Part Number: NAS1805-4

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CONDITION:
NS
NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE80205
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
WASHER OUTSIDE DIAMETER0.434 INCHES MAXIMUM
LUBRICATIONDRY FILM LUBRICANT
OVERALL HEIGHT0.250 INCHES MAXIMUM
NUT STYLEDOUBLE HEXAGON
WASHER THICKNESS0.020 INCHES NOMINAL
WIDTH ACROSS FLATS0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM
TEMP RATING450.0 DEG FAHRENHEIT MAXIMUM
THREAD SERIESUNJF
THREAD QUANTITY PER INCH28
NOMINAL THREAD SIZE0.250 INCHES
MATERIALIRON ALLOY 660 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SPECIFICATION/STANDARD DATA80205-NAS1805 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
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.