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NUT, SELF-LOCKING, HEX
Part Number: MS21083C12
NSN: 5310-00-923-4219
THREAD SERIES UNJF
NOMINAL THREAD SIZE 0.750 INCHES
THREAD QUANTITY PER INCH 16
THREAD CLASS 3B
THREAD DIRECTION RIGHT-HAND
MATERIAL PLASTIC POLYAMIDE LOCKING INSERT
STEEL CORROSION RESISTING NUT
SURFACE TREATMENT PASSIVATE OVERALL EXCEPT INSERT
SURFACE TREATMENT DOCUMENT AND QQ-P-35 FED SPEC SINGLE TREATMENT
CLASSIFICATION RESPONSE OVERALL EXCEPT INSERT
HARDNESS RATING NOT RATED
NUT STYLE A12 HEXAGON
NUT HEIGHT 0.422 INCHES MAXIMUM
WIDTH ACROSS FLATS 1.052 INCHES MINIMUM AND
1.064 INCHES MAXIMUM
BEARING SURFACE TYPE CHAMFERED OR WASHER FACED
LOCKING FEATURE PREVAILING TORQUE WITH
NONMETALLIC INSERT
COUNTERSINK ANGLE 88.0 DEGREES MINIMUM NUT
LUBRICATION SOLUBLE LUBRICANT
TEMP RATING 250.0 DEG FAHRENHEIT MAXIMUM
III BEARING SURFACE FINISH 125.0 MICROINCHES
III END ITEM IDENTIFICATION STURGEON CLASS SSN (637);DEEP
SUBMERGENCE SYSTEMS PROGRAMS
(DSSP);HELICOPTER, MH-53E;F-22
RAPTOR AIR DOMINANCE FIGHTER;
TICONDEROGA CLASS CG (47);
MISSILE, TOMAHAWK; SUPPORT
EQUIPMENT, B-1 AIRCRAFT; LOS
ANGELES CLASS SSN (688); RADAR
SET, LIGHTWEIGHT 3D (AN/TPS-59);
STREAM (STD. TENSIONED
REPLENISHMENT AT SEA METHOD)