5305-00-005-0644 SCREW,CLOSE TOLERANCE Index 5305-00-005-0648 SCREW,CLOSE TOLERANCE

National Stock Number:
5310-00-005-0647

Federal Supply Class:
5310

National Item Identification Number:
000050647

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:
FF-N-83681348FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
MS25082-B1896906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
THREAD SERIESUNS
NOMINAL THREAD SIZE0.438 INCHES
THREAD QUANTITY PER INCH32
THREAD PITCH DIAMETERS0.4177 TO 0.4217 INCHES
THREAD DIRECTIONRIGHT-HAND
MATERIALCOPPER ALLOY 360 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626,1/2 H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTOXIDE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-495 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NUT STYLEHEXAGON
NUT HEIGHT0.088 INCHES MINIMUM AND
0.098 INCHES MAXIMUM
WIDTH ACROSS FLATS0.496 INCHES MINIMUM AND
0.504 INCHES MAXIMUM
BEARING SURFACE TYPECHAMFERED
NONDEFINITIVE SPEC/STD DATA2 TYPE
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCEFF-N-836
MANUFACTURERS CODE96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCEMS25082-B18


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