4140-12-370-2038 IMPELLER,FAN,CENTRI Index 5365-12-370-2298 SPACER,PLATE

National Stock Number:
5305-12-370-2081

Federal Supply Class:
5305

National Item Identification Number:
123702081

Description:
SCREW,CLOSE TOLERANCE

Detail:
A SCREW, MACHINE or SCREW, CAP, SOCKET HEAD whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 IN.) (0.025 mm) or less of a specific diameter for items (1.000 IN.) (25 mm) or less in diameter. Items over (1.000 IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 IN.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 IN.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.


Manufacturer Information:
5900006091200184NGD EUROPEAN LAND SYSTEMS - STEYR GMBH
DIN609-M16X60-8.8D8286DIN DEUTSCHES INSTITUT FUER NORMUNGEV


Techincal Specification:
EXTERNAL THREAD TOLERANCE CLASS6G
FASTENER LENGTH60,0 MILLIMETERS NOMINAL
GRIP DIAMETER17,0 MILLIMETERS NOMINAL
GRIP LENGTH29,5 MILLIMETERS NOMINAL
HARDNESS RATING250 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM OVERALL AND 320 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM OVERALL
HEAD HEIGHT10,0 MILLIMETERS NOMINAL
HEAD STYLEHEXAGON
INTERNAL DRIVE STYLEW/O INTERNAL DRIVE
MATERIAL DOCUMENT AND CLASSIFICATIONISO898-1, 8.8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
MINIMUM TENSILE STRENGTH800 NEWTONS PER SQUARE MILLIMETER
NOMINAL THREAD DIAMETER16,0 MILLIMETERS
OFFSET YIELD STRENGTH640 NEWTONS PER SQUARE MILLIMETER
WIDTH BETWEEN FLATS24,0 MILLIMETERS NOMINAL
STRENGTH GRADE DESIGNATION8.8
TEST DATA DOCUMENTD8286-DIN609/FEB1995/ STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH27,0 MILLIMETERS NOMINAL
THREAD SERIES DESIGNATORISO M
THREAD PITCH IN MILLIMETERS2,0


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