4730-99-155-5593 REDUCER,PIPE Index 9905-99-155-5649 PLATE,DESIGNATION

National Stock Number:
5310-99-155-5645

Federal Supply Class:
5310

National Item Identification Number:
991555645

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:
BS1768K7766BRITISH STANDARDS INSTITUTION
BS1768 1/4 IN. UNCK7766BRITISH STANDARDS INSTITUTION
G101/5596 ITEM 11K7705KNDS DEFENCE UK LIMITED
G101/5596/11K7705KNDS DEFENCE UK LIMITED
N4030110K7705KNDS DEFENCE UK LIMITED


Techincal Specification:
BEARING SURFACE TYPEUNFINISHED
HARDNESS RATINGNOT RATED
MATERIAL DOCUMENT AND CLASSIFICATION720 CLASS G GRADE 1 MFR REF SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE0.500 INCHES
NUT HEIGHT0.214 INCHES MINIMUM AND 0.224 INCHES MAXIMUM
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.430 INCHES MINIMUM AND 0.437 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONDEF STAN 03-20 MIL STD 1ST TREATMENT RESPONSE AND DEF STAN 03-33 MIL STD 2ND TREATMENT RESPONSE OVERALL
SURFACE TREATMENTZINC AND PASSIVATE OVERALL
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH20
THREAD SERIESUNC


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