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National Stock Number:
5306-01-227-9085
Federal Supply Class:
5306
National Item Identification Number:
012279085
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:
| 15544950 | 11862 | GENERAL MOTORS CORP CHEVROLET MOTOR DIV SPECIAL PRODUCTS DEPT | | 15544950 | 7X677 | GENERAL MOTORS LLC |
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Techincal Specification:
| EXTERNAL THREAD TOLERANCE CLASS | 6G | | FASTENER LENGTH | 109.5 MILLIMETERS MINIMUM AND 111.0 MILLIMETERS MAXIMUM | | GRIP DIAMETER | 9.8900 MILLIMETERS MINIMUM AND 10.0000 MILLIMETERS MAXIMUM | | GRIP LENGTH | 90.00 MILLIMETERS NOMINAL | | HEAD HEIGHT | 6.17 MILLIMETERS MINIMUM AND 6.63 MILLIMETERS MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | GM 500-M FSCM 11862 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 10.0 MILLIMETERS | | WIDTH BETWEEN FLATS | 14.70 MILLIMETERS MINIMUM AND 15.00 MILLIMETERS MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | GM 4342-M 20D48 FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 6.0 MILLIMETERS NOMINAL | | THREAD SERIES DESIGNATOR | M | | THREAD PITCH IN MILLIMETERS | 1.5 |
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