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National Stock Number:
5306-01-377-7278
Federal Supply Class:
5306
National Item Identification Number:
013777278
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:
| 10116274 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | 11829-4-24 | 59563 | REID PRODUCTS INC. | | AIC763-4-24 | 06725 | SPS TECHNOLOGIES, LLC | | MB156-4-24 | 73197 | HI-SHEAR CORPORATION | | 12897-4-24 | 80539 | SPS TECHNOLOGIES, LLC | | MB156-4-24 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | VFK600-4-24 | 06710 | VALLEY-TODECO, INC. | | VS3190-4-24 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | S343-4-24 | 17446 | HUCK INTERNATIONAL, INC | | PBF 1267 | 27624 | SPS TECHNOLOGIES LLC | | ST3M753-4-24 | 76301 | THE BOEING COMPANY | | VS3190-4-24 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | S343-4-24 | 97928 | HUCK INTL INC |
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Techincal Specification:
| EXTENDED WASHER DIAMETER | 0.470 INCHES MINIMUM AND 0.480 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.162 INCHES MINIMUM AND 0.182 INCHES MAXIMUM | | FASTENER LENGTH | 1.982 INCHES NOMINAL | | GRIP DIAMETER | 0.2480 INCHES MINIMUM AND 0.2485 INCHES MAXIMUM | | GRIP LENGTH | 1.500 INCHES NOMINAL | | HEAD HEIGHT | 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM | | HEAD MINOR DIAMETER | 0.297 INCHES MINIMUM AND 0.312 INCHES MAXIMUM | | HEAD STYLE | SPLINE EXTENDED WASHER | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP XM-13 OVERALL | | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.298 INCHES MINIMUM AND 0.399 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNF |
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