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
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE1.75 INCHES
NUT HEIGHT9.64 INCHES MINIMUM AND 10.00 INCHES MAXIMUM
NUT STYLEHEXAGON
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH12
THREAD SERIESUN
WIDTH ACROSS FLATS18.67 INCHES MINIMUM AND 19.00 INCHES MAXIMUM


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