5310-00-535-8574 NUT,PLAIN,KNURLED Index 5310-00-535-8577 WASHER,FLAT

National Stock Number:
5310-00-535-8575

Federal Supply Class:
5310

National Item Identification Number:
005358575

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:
851381818876U S ARMY AVIATION AND MISSILE COMMAND


Techincal Specification:
BEARING SURFACE TYPEWASHER FACED
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582,CONDITION A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303 OVERALL
NOMINAL THREAD SIZE0.312 INCHES
NUT HEIGHT0.297 INCHES MINIMUM AND 0.328 INCHES MAXIMUM
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.547 INCHES MINIMUM AND 0.578 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION171,FIN. 5.4.1 MIL STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH18
THREAD SERIESUNC


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