5340-01-386-8156 PLUG,PROTECTIVE,DUST AND MOISTUR Index 5325-01-386-8158 RING,RETAINING

National Stock Number:
5310-01-386-8157

Federal Supply Class:
5310

National Item Identification Number:
013868157

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:
12387303-3019207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE0.438 INCHES
NUT HEIGHT0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
NUT STYLEHEXAGON
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTZINC AND CHROMATE OVERALL
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH20
THREAD SERIESUNF
WIDTH ACROSS FLATS0.675 INCHES MINIMUM AND 0.688 INCHES MAXIMUM


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