1560-01-542-4953 STIFFENER,AIRCRAFT Index 1560-01-542-4955 STIFFENER,AIRCRAFT

National Stock Number:
5310-01-542-4954

Federal Supply Class:
5310

National Item Identification Number:
015424954

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:
0.250-20UNC-2B BRS03950NAVAL INVENTORY CONTROL POINT MECHANICSBURG
569-7067769-81453711NAVAL SEA SYSTEMS COMMAND
7068566-30496169ELECTRIC BOAT CORPORATION
H677-2301-81496169ELECTRIC BOAT CORPORATION


Techincal Specification:
MATERIALCOPPER ALLOY OVERALL
PROPRIETARY CHARACTERISTICSPACS
NOMINAL THREAD SIZE0.250 INCHES
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH20
THREAD SERIESUNC


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