5965-01-388-4136 HEADSET,ELECTRICAL Index 3120-01-388-4138 BUSHING,SLEEVE

National Stock Number:
5310-01-388-4137

Federal Supply Class:
5310

National Item Identification Number:
013884137

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:
12387349-3219207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
THREAD DIRECTIONRIGHT-HAND
MATERIALPLASTIC POLYAMIDE LOCKING INSERT
STEEL NUT
NUT STYLEHEXAGON
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN OR
PREVAILING TORQUE WITH NONMETALLIC INSERT
BEARING SURFACE TYPECHAMFERED OR
WASHER FACED
THREAD SERIESUNF
NOMINAL THREAD SIZE0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3B
SURFACE TREATMENTZINC AND
CHROMATE OVERALL EXCEPT INSERT
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND
35.0 ROCKWELL C MAXIMUM
NUT HEIGHT0.328 INCHES MAXIMUM
WIDTH ACROSS FLATS0.428 INCHES MINIMUM AND
0.438 INCHES MAXIMUM
LUBRICATIONDRY FILM LUBRICANT
TEMP RATING250.0 DEG FAHRENHEIT NOMINAL


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