5310-01-286-0878 NUT,PLAIN,HEXAGON Index 5310-01-286-0880 WASHER,FLAT

National Stock Number:
5310-01-286-0879

Federal Supply Class:
5310

National Item Identification Number:
012860879

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:
MS9553-080U583SAE INTERNATIONAL
MS9553-0881343SOCIETY OF AUTOMOTIVE ENGINEERS INC
MS9553-0896906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
THREAD SERIESUNJF
NOMINAL THREAD SIZE0.750 INCHES
THREAD QUANTITY PER INCH16
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL COMP 304 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5639 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT STYLEHEXAGON
NUT HEIGHT0.344 INCHES NOMINAL
WIDTH ACROSS FLATS0.990 INCHES MINIMUM AND
1.002 INCHES MAXIMUM
BEARING SURFACE TYPECHAMFERED
NUT COUNTERBORE DEPTH0.037 INCHES MINIMUM AND
0.047 INCHES MAXIMUM NUT
COUNTERBORE DIAMETER0.915 INCHES MINIMUM AND
0.925 INCHES MAXIMUM NUT
COUNTERSINK ANGLE110.0 DEGREES NOMINAL NUT
BEARING SURFACE FINISH125.0 MICROINCHES


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