4540-01-099-7977 HEATING ELEMENT,ELECTRICAL,NONIMMERSION TYPE Index 5310-01-099-7981 NUT,PLAIN,CLINCH

National Stock Number:
5310-01-099-7978

Federal Supply Class:
5310

National Item Identification Number:
010997978

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:
223048-00381413BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.
40809-0973743FISCHER SPECIAL MFG CO


Techincal Specification:
THREAD SERIESUNS
NOMINAL THREAD SIZE0.531 INCHES
THREAD QUANTITY PER INCH32
THREAD PITCH DIAMETERS0.5107 TO 0.5152 INCHES
THREAD DIRECTIONRIGHT-HAND
MATERIALCOPPER ALLOY 360 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626,1/2 HARD 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 HEIGHT0.078 INCHES NOMINAL
WIDTH ACROSS FLATS0.615 INCHES MINIMUM AND
0.635 INCHES MAXIMUM
BEARING SURFACE TYPECHAMFERED


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