5310-00-171-5257 WASHER,FLAT Index 5310-00-171-5259 WASHER,FLAT

National Stock Number:
5310-00-171-5258

Federal Supply Class:
5310

National Item Identification Number:
001715258

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:
MS9361-1496906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
THREAD SERIESUNJF
NOMINAL THREAD SIZE0.500 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
MATERIALIRON ALLOY 660 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OR
AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT STYLEHEXAGON
NUT HEIGHT0.240 INCHES MINIMUM AND
0.260 INCHES MAXIMUM
WIDTH ACROSS FLATS0.741 INCHES MINIMUM AND
0.752 INCHES MAXIMUM
BEARING SURFACE TYPECHAMFERED
COUNTERSINK ANGLE90.0 DEGREES NOMINAL NUT
BEARING SURFACE FINISH63.0 MICROINCHES
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCEMS9361-14


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