5305-01-313-3976 SCREW,TAPPING Index 5310-01-313-3978 NUT,PLAIN,KNURLED

National Stock Number:
5310-01-313-3977

Federal Supply Class:
5310

National Item Identification Number:
013133977

Description:
NUT,SELF-LOCKING,PLATE

Detail:
A nut with a flanged base of varied shapes which may be plain or mounted by rivets, bolts, welding or integral prongs. An integral feature is incorporated for locking on the threads of a mating member.


Manufacturer Information:
MS21076L4N80205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
MS21076L4N96906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
PL405522-01 FN 363631BAE SYSTEMS CONTROLS INC.
PL405545-01 FN 363631BAE SYSTEMS CONTROLS INC.
MS21076L4NA0126LEONARDO SPA HELICOPTERS DIVISION -PRODUCTION SITE


Techincal Specification:
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
THREAD DIRECTIONRIGHT-HAND
NUT STYLEPLATE
MATERIALIRON ALLOY 660 OVERALL
THREAD SERIESUNJF
NOMINAL THREAD SIZE0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3B
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR
AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR
AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING49.0 ROCKWELL C MAXIMUM
NUT LENGTH0.801 INCHES MAXIMUM
NUT HEIGHT0.281 INCHES MAXIMUM
PLATE THICKNESS0.027 INCHES MINIMUM AND
0.090 INCHES MAXIMUM
PLATE WIDTH0.350 INCHES MINIMUM AND
0.500 INCHES MAXIMUM
LUBRICATIONDRY FILM LUBRICANT OR
SOLUBLE LUBRICANT
NUT MOUNTING PROVISIONSTRAIGHT HOLES
MOUNTING HOLE ARRANGEMENT STYLE2 HOLES
MOUNTING HOLE DIAMETER0.098 INCHES MINIMUM AND
0.103 INCHES MAXIMUM
DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER0.276 INCHES MINIMUM AND
0.286 INCHES MAXIMUM
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG LENGTH0.560 INCHES MINIMUM AND
0.564 INCHES MAXIMUM
TEMP RATING450.0 DEG FAHRENHEIT MAXIMUM
FEATURES PROVIDEDFLOATING NUT
CRITICALITY CODE JUSTIFICATIONAGAV


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