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National Stock Number:
5306-01-560-7548
Federal Supply Class:
5306
National Item Identification Number:
015607548
Description:
BOLT,SHEAR
Detail:
A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. 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. The unthreaded portion is of specific 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. A locking feature may be incorporated in the design of the head or threads. See BOLT, MACHINE and BOLT, CLEVIS.
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Manufacturer Information:
| NAS1225C68 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |
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Techincal Specification:
| FASTENER LENGTH | 4.704 INCHES MINIMUM AND 4.734 INCHES MAXIMUM | | GRIP DIAMETER | 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM | | GRIP LENGTH | 4.240 INCHES MINIMUM AND 4.260 INCHES MAXIMUM | | HEAD HEIGHT | 0.141 INCHES MINIMUM AND 0.171 INCHES MAXIMUM | | HEAD STYLE | DISHED HEXAGON | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT SHEAR HEXAGON HEAD SELF LOCKING | | LOCKING FEATURE | STRIP OR PELLET OR PATCH OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | A286 PER AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | WIDTH BETWEEN FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM | | SPECIFICATION/STANDARD DATA | NAS-1225 NATIONAL STD/SPEC | | SURFACE FINISH | 125.0 MICROINCHES OVERALL | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.469 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF |
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