5310-01-611-0016 WASHER,FLAT 5310-01-611-0221 WASHER,LOCK

National Stock Number:
5310-01-611-0087

Federal Supply Class:
5310

National Item Identification Number:
016110087

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:
11403090Y3H3FASTENAL COMPANY


Techincal Specification:
BEARING SURFACE TYPEWASHER FACED
HARDNESS RATING30.0 ROCKWELL C NOMINAL
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE1.75 INCHES
NUT STYLEHEXAGON
NUT HEIGHT9.64 INCHES MINIMUM AND 10.00 INCHES MAXIMUM
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
WIDTH ACROSS FLATS18.67 INCHES MINIMUM AND 19.00 INCHES MAXIMUM
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH12
THREAD SERIESUN


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