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National Stock Number:
5306-01-277-2155
Federal Supply Class:
5306
National Item Identification Number:
012772155
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:
| 74597-M2015-10 | 56878 | SPS TECHNOLOGIES, LLC | | 74597-M2015-10 | 80539 | SPS TECHNOLOGIES, LLC | | BACB30SX20-10 | 17446 | HUCK INTERNATIONAL, INC | | BACB30SX20-10 | 17943 | FEDERAL MANUFACTURING CORP | | BACB30SX20-10 | 27624 | SPS TECHNOLOGIES LLC | | BACB30SX20-10 | 81205 | THE BOEING COMPANY | | VS3078-12-10 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | BACB30SX20-10 | 97928 | HUCK INTL INC |
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Techincal Specification:
| EXTERNAL THREAD TOLERANCE CLASS | 4H | | FASTENER LENGTH | 44.0 MILLIMETERS NOMINAL | | FEATURES PROVIDED | FINISHED HEAD | | GRIP DIAMETER | 19.98 MILLIMETERS MINIMUM AND 20.00 MILLIMETERS MAXIMUM | | GRIP LENGTH | 10.0 MILLIMETERS NOMINAL | | HEAD HEIGHT | 12.78 MILLIMETERS MINIMUM AND 13.22 MILLIMETERS MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5734 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | IRON ALLOY 660 OVERALL | | NOMINAL THREAD DIAMETER | 20.0 MILLIMETERS | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | WIDTH BETWEEN FLATS | 29.67 MILLIMETERS MINIMUM AND 30.00 MILLIMETERS MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 34.0 MILLIMETERS NOMINAL | | THREAD SERIES DESIGNATOR | M | | THREAD PITCH IN MILLIMETERS | 1.5 |
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