6515-01-546-2886 INTUBATION SET,LACHRYMAL Index 6515-01-546-2888 SHIELD,EYE,SURGICAL

National Stock Number:
5306-01-546-2887

Federal Supply Class:
5306

National Item Identification Number:
015462887

Description:
BOLT,CLOSE TOLERANCE

Detail:
An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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 not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see BOLT, SHEAR. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see BOLT, MACHINE.


Manufacturer Information:
5W-217711083CATERPILLAR INC
5W-2177K2709PERKINS ENGINES COMPANY LTD


Techincal Specification:
MATERIALSTEEL OVERALL
MINIMUM TENSILE STRENGTH830 MEGAPASCALS
NOMINAL THREAD DIAMETER12.0 MILLIMETERS
SPECIAL FEATURES18MM HEAD DIA; LGTH 20MM
THREAD PITCH IN MILLIMETERS1.75
THREAD SERIES DESIGNATORISO M


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