1560-01-551-7490 PLATE,STRUCTURAL,AIRCRAFT Index 1560-01-551-7492 PLATE,STRUCTURAL,AIRCRAFT

National Stock Number:
5310-01-551-7491

Federal Supply Class:
5310

National Item Identification Number:
015517491

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:
2070499989619MACK TRUCKS, INC.
20704999Z4117VOLVO GROUP GOVERNMENT SALES OCEANIA
22AX2089619MACK TRUCKS, INC.
22AX20Z4117VOLVO GROUP GOVERNMENT SALES OCEANIA


Techincal Specification:
NUT HEIGHT0.258 INCHES MINIMUM AND 0.273 INCHES MAXIMUM
NUT STYLEHEXAGON
NOMINAL THREAD SIZE0.312 INCHES
PART NAME ASSIGNED BY CONTROLLING AGENCYNUT, HEX
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH18
WIDTH ACROSS FLATS0.500 INCHES MAXIMUM
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2B


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