5310-01-271-4351 NUT,PLAIN,HEXAGON Index 5310-01-271-4353 WASHER,FLAT

National Stock Number:
5310-01-271-4352

Federal Supply Class:
5310

National Item Identification Number:
012714352

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:
74D111355-200776301THE BOEING COMPANY


Techincal Specification:
BEARING SURFACE TYPECHAMFERED
COUNTERBORE DIAMETER0.275 INCHES MINIMUM AND 0.295 INCHES MAXIMUM NUT
COUNTERSINK ANGLE89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM NUT
HARDNESS RATING35.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5610 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 416 OVERALL
NOMINAL THREAD SIZE0.250 INCHES
NUT HEIGHT0.370 INCHES NOMINAL
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.375 INCHES NOMINAL
TEMP RATING1000.0 FAHRENHEIT MAXIMUM
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH28
THREAD SERIESUNJF


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