5306-01-206-7255 BOLT,SHEAR Index 5306-01-206-7257 BOLT,CLOSE TOLERANCE

National Stock Number:
5306-01-206-7256

Federal Supply Class:
5306

National Item Identification Number:
012067256

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:
109453-5-456878SPS TECHNOLOGIES, LLC
109453-5-480539SPS TECHNOLOGIES, LLC
11825-5-459563REID PRODUCTS INC.
AIC753-5-406725SPS TECHNOLOGIES, LLC
BM17019-5-417446HUCK INTERNATIONAL, INC
BM17019-5-497928HUCK INTL INC
GS1016-5-41EM77B & B SPECIALTIES INC
KS3020-5-459764KENALOY PRODUCTS INC SUB MASCO CORP
MA5453-5-458845ABOUNDING SECURITY INC DIV OF MAA CORP
MB61-5-473197HI-SHEAR CORPORATION
MB61-5-4L4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC
PBF1253-5-427624SPS TECHNOLOGIES LLC
S11-1060-5-457928SONIC INDUSTRIES, INC.
S353-5-417446HUCK INTERNATIONAL, INC
S353-5-497928HUCK INTL INC
ST3M453-5-40JV78J M PRECISION INC
ST3M453-5-40UCY9M.S. AEROSPACE INC.
ST3M453-5-40ZC92HEARTLAND PRECISION FASTENERS INC
ST3M453-5-456878SPS TECHNOLOGIES, LLC
ST3M453-5-458845ABOUNDING SECURITY INC DIV OF MAA CORP
ST3M453-5-458998FASTENER INNOVATION TECHNOLOGY, INC.
ST3M453-5-459764KENALOY PRODUCTS INC SUB MASCO CORP
ST3M453-5-476301THE BOEING COMPANY
ST3M453-5-492215HOWMET GLOBAL FASTENING SYSTEMS INC
VAL23029-5-406710VALLEY-TODECO, INC.
VS3204-5-406950HOWMET GLOBAL FASTENING SYSTEMS INC
VS3204-5-492215HOWMET GLOBAL FASTENING SYSTEMS INC


Techincal Specification:
FASTENER LENGTH0.701 INCHES MINIMUM AND 0.748 INCHES MAXIMUM
GRIP LENGTH0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
GRIP DIAMETER0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM
HEAD HEIGHT0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM
HEAD STYLEDOUBLE HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP XM-13 OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES
WIDTH BETWEEN FLATS0.482 INCHES MINIMUM AND 0.502 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM
THREAD QUANTITY PER INCH24
THREAD SERIES DESIGNATORUNJF


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