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National Stock Number: 5306-00-126-2839
Federal Supply Class: 5306
National Item Identification Number: 001262839
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:
4G13686-101A | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
EXTENDED WASHER DIAMETER | 0.380 INCHES NOMINAL | EXTENDED WASHER THICKNESS | 0.084 INCHES MINIMUM AND 0.093 INCHES MAXIMUM | FASTENER LENGTH | 0.250 INCHES NOMINAL | FEATURES PROVIDED | FINISHED HEAD | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL | HEAD HEIGHT | 0.330 INCHES NOMINAL | HEAD STYLE | DOUBLE HEXAGON W/HOLE | HOLE CONFIGURATION STYLE | ROUND | HOLE DIAMETER | 0.047 INCHES NOMINAL | HOLE QUANTITY | 2 | HOLE TYPE | DRILLED | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | MATERIAL | STEEL COMP 8740 OVERALL | NOMINAL THREAD DIAMETER | 0.250 INCHES | WIDTH BETWEEN FLATS | 0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM | SURFACE FINISH | 32.0 MICROINCHES THREADS | SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD | THREAD CLASS | 3A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 0.179 INCHES MINIMUM | THREAD QUANTITY PER INCH | 28 | THREAD SERIES DESIGNATOR | UNF |
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