5305-01-331-5797 SCREW,CAP,SOCKET HEAD Index 5306-01-331-5799 BOLT,CLOSE TOLERANCE

National Stock Number:
5306-01-331-5798

Federal Supply Class:
5306

National Item Identification Number:
013315798

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:
11701A05U01459563REID PRODUCTS INC.
8485-5A01456786ELECTROMAGNETIC RESEARCH CORP
AIC2264A05U01406725SPS TECHNOLOGIES, LLC
BM3210-5A01417446HUCK INTERNATIONAL, INC
PBF1042A5U01427624SPS TECHNOLOGIES LLC
BM3210-5A01497928HUCK INTL INC
VAL23602-5D01406710VALLEY-TODECO, INC.
VS2979A05U01492215HOWMET GLOBAL FASTENING SYSTEMS INC
STSBG00198857FIEBING COMPANY, INC
STSBG001A05U01498897LOCKHEED MARTIN CORP


Techincal Specification:
FASTENER LENGTH1.218 INCHES MINIMUM AND 1.265 INCHES MAXIMUM
FEATURES PROVIDEDCETYL ALCOHOL LUBRICANT
GRIP DIAMETER0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM
GRIP LENGTH0.875 INCHES NOMINAL
HEAD HEIGHT0.187 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 DIAMETER0.312 INCHES
WIDTH BETWEEN FLATS0.493 INCHES MINIMUM AND 0.502 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 LENGTH0.350 INCHES NOMINAL
THREAD QUANTITY PER INCH24
THREAD SERIES DESIGNATORUNJF


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