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National Stock Number:
5306-01-197-1577
Federal Supply Class:
5306
National Item Identification Number:
011971577
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:
| 122896-4-5 | 56878 | SPS TECHNOLOGIES, LLC | | 122896-4-5 | 80539 | SPS TECHNOLOGIES, LLC | | AIC688-4-5 | 06725 | SPS TECHNOLOGIES, LLC | | HP7747-4-5 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | GS1031-4-5 | 1EM77 | B & B SPECIALTIES INC | | MB155-4-5 | 73197 | HI-SHEAR CORPORATION | | VCG0002-4-5 | 06710 | VALLEY-TODECO, INC. | | S397-4-5 | 17446 | HUCK INTERNATIONAL, INC | | PBF 1266-4-5 | 27624 | SPS TECHNOLOGIES LLC | | ST3M747-4-5 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | ST3M747-4-5 | 59563 | REID PRODUCTS INC. | | ST3M747-4-5 | 76301 | THE BOEING COMPANY | | S397-4-5 | 97928 | HUCK INTL INC | | MB155-4-5 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | VS3191-4-5 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | VS3191-4-5 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| FASTENER LENGTH | 0.604 INCHES MINIMUM AND 0.651 INCHES MAXIMUM | | GRIP DIAMETER | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM | | GRIP LENGTH | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM | | HEAD HEIGHT | 0.118 INCHES NOMINAL | | HEAD STYLE | DOUBLE HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP XM-13 OVERALL | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | WIDTH BETWEEN FLATS | 0.448 INCHES MINIMUM AND 0.455 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.282 INCHES MINIMUM AND 0.349 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 28 |
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