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National Stock Number:
5306-01-622-5241
Federal Supply Class:
5306
National Item Identification Number:
016225241
Description:
BOLT,MACHINE
Detail:
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, BOLT, SHEAR. See also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE.
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Manufacturer Information:
| BACB30LE4DK20 | 81205 | THE BOEING COMPANY |
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Techincal Specification:
| THREAD DIRECTION | RIGHT-HAND | | FASTENER LENGTH | 1.735 INCHES MINIMUM AND | | 1.765 INCHES MAXIMUM | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | THREAD LENGTH | 0.500 INCHES NOMINAL | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.2500 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | ALUMINUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | BMS10-85, TYPE 1, CLASS A OR B MFR REF SINGLE TREATMENT RESPONSE OVERALL | | HEAD HEIGHT | 0.225 INCHES MINIMUM AND | | 0.245 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.305 INCHES MINIMUM AND | | 0.313 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.465 INCHES MINIMUM AND | | 0.475 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.032 INCHES MINIMUM AND | | 0.052 INCHES MAXIMUM | | GRIP LENGTH | 1.25 INCHES NOMINAL | | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND | | 0.086 INCHES MAXIMUM ALL HOLES |
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