5310-01-178-5448 NUT,PLAIN,HEXAGON Index 5310-01-178-5450 WASHER,KEY

National Stock Number:
5310-01-178-5449

Federal Supply Class:
5310

National Item Identification Number:
011785449

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:
12322525-119207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
BEARING SURFACE TYPEFLAT
HARDNESS RATING24.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM
MATERIALSTEEL COMP 1141 OR STEEL COMP 1144 OVERALL
NOMINAL THREAD SIZE1.375 INCHES
NUT HEIGHT0.440 INCHES NOMINAL
NUT STYLEHEXAGON
WIDTH ACROSS FLATS1.973 INCHES MINIMUM AND 2.008 INCHES MAXIMUM
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNEF
THREAD QUANTITY PER INCH18


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