5305-01-286-0877 SCREW,CLOSE TOLERANCE Index 5310-01-286-0879 NUT,PLAIN,HEXAGON

National Stock Number:
5310-01-286-0878

Federal Supply Class:
5310

National Item Identification Number:
012860878

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:
75D111330-203176301THE BOEING COMPANY


Techincal Specification:
BEARING SURFACE TYPEFLAT
COUNTERSINK ANGLE90.0 DEGREES NOMINAL BOTH ENDS
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-530,COND H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY 172 OVERALL
NOMINAL THREAD SIZE0.190 INCHES
NUT HEIGHT0.280 INCHES NOMINAL
NUT STYLEHEXAGON
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH32
WIDTH ACROSS FLATS0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM


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