5310-01-517-7739 WASHER,FLAT Index 4130-01-517-7741 EVAPORATOR COIL,REFRIGERATION

National Stock Number:
5310-01-517-7740

Federal Supply Class:
5310

National Item Identification Number:
015177740

Description:
NUT,SELF-LOCKING,CASTELLATED,HEX

Detail:
A NUT HAVING 6 FLAT SIDES, FLAT ON THE BOTTOM AND HAVING A SLOTTED CYLINDRICAL OR DOME SHAPED UPPER PORTION. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER. THE SLOTS WHEN USED IN CONJUNCTION WITH A SOLID OR SPLIT (COTTER) PIN, ACT AS AN EXTRA "FAIL SAFE" FEATURE IN CRITICAL APPLICATIONS. EXCLUDES NUT (1), SELF-LOCKING, SLOTTED, HEXAGON.


Manufacturer Information:
31248ITEM3394259BECHTEL MARINE PROPULSION CORPORATION
91831A16007BY4MCMASTER-CARR SUPPLY CO


Techincal Specification:
BEARING SURFACE TYPEFLAT
HARDNESS RATING57.0 ROCKWELL B MINIMUM
NUT HEIGHT1.187 INCHES NOMINAL
NUT STYLECASTELLATED, HEXAGON
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL THREAD SIZE1.000 INCHES
WIDTH ACROSS FLATS1.437 INCHES NOMINAL
TEMP RATING250.0 DEG FAHRENHEIT MAXIMUM
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH14
THREAD SERIESUNF
THREAD PITCH DIAMETERS+4.5 TO 5.0 MILLIMETERS


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