3020-00-297-8928 GEAR SECTOR,BEVEL Index 4730-00-297-8930 ADAPTER,STRAIGHT,FLANGE TO HOSE

National Stock Number:
5310-00-297-8929

Federal Supply Class:
5310

National Item Identification Number:
002978929

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:
MILB857TYPE3STYLEA0RB81349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
THREAD SERIESUNF
NOMINAL THREAD SIZE0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
MATERIALNICKEL ALLOY R-405 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NUT STYLEHEXAGON
NUT HEIGHT0.212 INCHES MINIMUM AND
0.226 INCHES MAXIMUM
WIDTH ACROSS FLATS0.428 INCHES MINIMUM AND
0.437 INCHES MAXIMUM
BEARING SURFACE TYPECHAMFERED OR
WASHER FACED
NONDEFINITIVE SPEC/STD DATA3 TYPE AND
A STYLE AND
B STYLE
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCEMILB857TYPE3STYLEA0RB


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