4540-01-244-2250 HEATING ELEMENT,ELECTRICAL,NONIMMERSION TYPE Index 5310-01-244-2252 NUT,PLAIN,HEXAGON

National Stock Number:
5310-01-244-2251

Federal Supply Class:
5310

National Item Identification Number:
012442251

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:
1.00008UNC2BT1G400NSA/BAA81349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
200-6226444/PC.2080064NAVAL SHIP SYSTEMS COMMAND
MIL-B-857,TYIII,1-8UNC-2B03950NAVAL INVENTORY CONTROL POINT MECHANICSBURG


Techincal Specification:
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
CRITICALITY CODE JUSTIFICATIONZZZY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALNICKEL ALLOY OVERALL
NOMINAL THREAD SIZE1.000 INCHES
NUT HEIGHT0.831 INCHES MINIMUM AND 0.887 INCHES MAXIMUM
NUT STYLEHEXAGON
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH8
WIDTH ACROSS FLATS1.450 INCHES MINIMUM AND 1.500 INCHES MAXIMUM


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