|
|
|
National Stock Number:
5306-01-221-1838
Federal Supply Class:
5306
National Item Identification Number:
012211838
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.
|
Manufacturer Information:
| 69-63788-503 | 82918 | THE BOEING COMPANY |
|
Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.750 INCHES NOMINAL ALL HOLES | | FASTENER LENGTH | 2.900 INCHES NOMINAL | | GRIP DIAMETER | 0.8735 INCHES MINIMUM AND 0.8740 INCHES MAXIMUM | | GRIP LENGTH | 2.435 INCHES NOMINAL | | HEAD HEIGHT | 0.438 INCHES MINIMUM AND 0.453 INCHES MAXIMUM | | HEAD STYLE | UNDERCUT HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | IRON ALLOY 660 OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | NOMINAL THREAD DIAMETER | 0.875 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.141 INCHES MINIMUM ALL HOLES AND 0.151 INCHES MAXIMUM ALL HOLES | | WIDTH BETWEEN FLATS | 1.239 INCHES MINIMUM AND 1.252 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 CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.465 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 14 | | THREAD SERIES DESIGNATOR | UNF |
|
|