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National Stock Number:
5306-01-294-8705
Federal Supply Class:
5306
National Item Identification Number:
012948705
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.
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Manufacturer Information:
| 11701A06D040 | 59563 | REID PRODUCTS INC. | | 68485-6-040 | 56878 | SPS TECHNOLOGIES, LLC | | AIC2264A06D040 | 06725 | SPS TECHNOLOGIES, LLC | | BM3210-6A040D | 17446 | HUCK INTERNATIONAL, INC | | PBF1042A6D040 | 27624 | SPS TECHNOLOGIES LLC | | BM3210-6A040D | 97928 | HUCK INTL INC | | VAL23602-6DS040 | 06710 | VALLEY-TODECO, INC. | | VS2979A06D040 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | STSBG001A06D040 | 1CNU4 | JOHN HASSALL LLC | | STSBG001A06D040 | 1EM77 | B & B SPECIALTIES INC | | STSBG001A06D040 | 4GP55 | ACUFAST AIRCRAFT PRODUCTS | | STSBG001A06D040 | 57928 | SONIC INDUSTRIES, INC. | | VS2979A06D040 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | STSBG001A06D040 | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| GRIP DIAMETER | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM | | GRIP LENGTH | 2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM | | HEAD HEIGHT | 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | STSBS001 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP H11 OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | MINIMUM TENSILE STRENGTH | 156000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.096 INCHES MINIMUM FIRST HOLE AND 0.116 INCHES MAXIMUM FIRST HOLE | | WIDTH BETWEEN FLATS | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | STSBS001 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | NICKEL OVERALL AND CHROMATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.393 INCHES MINIMUM AND 0.460 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.760 INCHES MINIMUM FIRST HOLE AND 2.812 INCHES MAXIMUM FIRST HOLE | | FASTENER LENGTH | 2.903 INCHES MINIMUM AND 2.950 INCHES MAXIMUM | | FEATURES PROVIDED | CETYL ALCOHOL LUBRICANT |
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