5306-01-331-1268 BOLT,CLOSE TOLERANCE Index 5306-01-331-1270 BOLT,CLOSE TOLERANCE

National Stock Number:
5306-01-331-1269

Federal Supply Class:
5306

National Item Identification Number:
013311269

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:
11701A08U01559563REID PRODUCTS INC.
68485-8A01556878SPS TECHNOLOGIES, LLC
AIC2264A08U01506725SPS TECHNOLOGIES, LLC
BM3210-8A01517446HUCK INTERNATIONAL, INC
CS2979A08U01592215HOWMET GLOBAL FASTENING SYSTEMS INC
BM3210-8A01597928HUCK INTL INC
VAL23602-8D01506710VALLEY-TODECO, INC.
PBF1042A8U01527624SPS TECHNOLOGIES LLC
STSBG001A08U01598897LOCKHEED MARTIN CORP


Techincal Specification:
FASTENER LENGTH1.482 INCHES MINIMUM AND 1.529 INCHES MAXIMUM
FEATURES PROVIDEDCETYL ALCOHOL LUBRICANT
GRIP DIAMETER0.4985 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM
GRIP LENGTH1.062 INCHES NOMINAL
HEAD HEIGHT0.281 INCHES NOMINAL
HEAD STYLEDOUBLE HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONSTSBS001,CAGEC 98897 MFR REF SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP H11 OVERALL
PROPRIETARY CHARACTERISTICSPACS
NOMINAL THREAD DIAMETER0.500 INCHES
WIDTH BETWEEN FLATS0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONSTSBS001,CAGEC 98897 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCHROMATE OVERALL AND NICKEL OVERALL AND CADMIUM OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.561 INCHES NOMINAL
THREAD QUANTITY PER INCH20
THREAD SERIES DESIGNATORUNJF


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