5305-01-431-9987 SCREW,CAP,SOCKET HEAD Index 5305-01-431-9989 SCREW,MACHINE

National Stock Number:
5310-01-431-9988

Federal Supply Class:
5310

National Item Identification Number:
014319988

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:
21104874953711NAVAL SEA SYSTEMS COMMAND
512-6404649 FIND 2653711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
BEARING SURFACE TYPEWASHER FACED
MATERIALNICKEL ALLOY 400 OVERALL
NOMINAL THREAD SIZE1.375 INCHES
NUT HEIGHT1.310 INCHES MINIMUM AND 1.409 INCHES MAXIMUM
NUT STYLEHEXAGON
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH12
THREAD SERIESUNF
WIDTH ACROSS FLATS2.119 INCHES MINIMUM AND 2.188 INCHES MAXIMUM


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