5305-01-345-6548 SCREW,SHOULDER Index 5306-01-345-6550 BOLT,CLOSE TOLERANCE

National Stock Number:
5306-01-345-6549

Federal Supply Class:
5306

National Item Identification Number:
013456549

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:
249937699551GOODRICH CORPORATION


Techincal Specification:
FASTENER LENGTH1.110 INCHES MINIMUM AND 1.140 INCHES MAXIMUM
GRIP DIAMETER0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM
GRIP LENGTH0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
HEAD HEIGHT0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM
HEAD STYLEHEXAGON
LOCKING FEATURESTRIP THREADS
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5735 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
MATERIALPLASTIC NYLON LOCKING FEATUREIRON ALLOY 660 FASTENER
PROPRIETARY CHARACTERISTICSPACS
MINIMUM TENSILE STRENGTH140000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.375 INCHES
WIDTH BETWEEN FLATS0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-26074 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER
SURFACE TREATMENTNICKEL FASTENER
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM
THREAD QUANTITY PER INCH24
THREAD SERIES DESIGNATORUNJF


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