5305-00-579-0569 SCREW,MACHINE Index 5305-00-579-0573 SCREW,MACHINE

National Stock Number:
5310-00-579-0571

Federal Supply Class:
5310

National Item Identification Number:
005790571

Description:
NUT,PLAIN,HEXAGON

Detail:
A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see LOCKNUT, ELECTRICAL CONDUIT. See also LOCKNUT, TUBE FITTING. For items having a thickness (or height) exceeding two times the width across the flats, use POST, ELECTRICAL-MECHANICAL EQUIPMENT. (When height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)


Manufacturer Information:
AN345C61688044AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE
MILS933TYPEA81349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
COUNTERSINK ANGLE110.0 DEGREES NOMINAL NUT
MATERIALSTEEL COMP 431 OR STEEL COMP 303 OVERALL
NOMINAL THREAD SIZE0.375 INCHES
NUT HEIGHT0.239 INCHES MINIMUM AND 0.257 INCHES MAXIMUM
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.607 INCHES MINIMUM AND 0.625 INCHES MAXIMUM
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNF
THREAD QUANTITY PER INCH24


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