5310-01-106-7988 NUT,PLAIN,ROUND Index 5310-01-106-7990 WASHER,SHOULDERED AND RECESSED

National Stock Number:
5310-01-106-7989

Federal Supply Class:
5310

National Item Identification Number:
011067989

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:
1229511719207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
BEARING SURFACE TYPECHAMFERED
MATERIALALUMINUM ALLOY 5083 OR ALUMINUM ALLOY 5086 OVERALL
NOMINAL THREAD SIZE1.250 INCHES
NUT HEIGHT1.630 INCHES NOMINAL
NUT STYLEHEXAGON
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH7
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
WIDTH ACROSS FLATS2.000 INCHES NOMINAL


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