5305-00-638-5221 SCREWXCAPXHEXAGON H Index 5305-00-638-5246 SETSCREW

National Stock Number:
5310-00-638-5226

Federal Supply Class:
5310

National Item Identification Number:
006385226

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:
AN12153788044AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE


Techincal Specification:
BEARING SURFACE TYPEWASHER FACED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5628 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 431 OVERALL
NOMINAL THREAD SIZE0.438 INCHES
NUT HEIGHT0.375 INCHES NOMINAL
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH20
THREAD PITCH DIAMETERS+0.4050 TO 0.4091 INCHES
THREAD SERIESUNF


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