5310-00-138-4260 NUT,PLAIN,SINGLE BALL SEAT,HEXAG Index 5340-00-138-4267 STRAP,RETAINING

National Stock Number:
5310-00-138-4261

Federal Supply Class:
5310

National Item Identification Number:
001384261

Description:
NUT,SELF-LOCKING,HEXAGON

Detail:
A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes NUT (1), SELF-LOCKING, CAP.


Manufacturer Information:
LS12906-9998897LOCKHEED MARTIN CORP
MS21044B480205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
MS21044B496906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
BEARING SURFACE FINISH125.0 MICROINCHES
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
COUNTERSINK ANGLE88.0 DEGREES NOMINAL NUT
CRITICALITY CODE JUSTIFICATIONFEAT
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
LUBRICATIONSOLUBLE LUBRICANT
NUT HEIGHT0.240 INCHES MINIMUM AND 0.360 INCHES MAXIMUM
NUT STYLEHEXAGON
MATERIALCOPPER ALLOY 360 OR COPPER ALLOY 260 NUT
NOMINAL THREAD SIZE0.250 INCHES
SPECIAL FEATURESMAGNETIC PARTICLE INSPECTION
WIDTH ACROSS FLATS0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
SURFACE TREATMENTCADMIUM OVERALL EXCEPT INSERT
TEMP RATING250.0 FAHRENHEIT NOMINAL
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH28
THREAD SERIESUNJF


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