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National Stock Number:
5306-01-284-2990
Federal Supply Class:
5306
National Item Identification Number:
012842990
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:
| 243-5864871-PC 20007 | 53711 | NAVAL SEA SYSTEMS COMMAND | | LHD243004-0007 | 53711 | NAVAL SEA SYSTEMS COMMAND | | LHD243004-PC 10007 | 76657 | NATIONAL FORGE COMPANY |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 12.187 INCHES NOMINAL FIRST HOLE | | FASTENER LENGTH | 12.500 INCHES NOMINAL | | FEATURES PROVIDED | FINISHED HEAD | | GRIP LENGTH | 8.406 INCHES NOMINAL | | HEAD HEIGHT | 2.750 INCHES NOMINAL | | HEAD STYLE | HEXAGON | | NOMINAL THREAD DIAMETER | 2.500 INCHES | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-24093 CL CTY 1 OR TY 2 MIL SPEC ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP E4340 OVERALL OR STEEL COMP 4147 OVERALL | | SHANK UNTHREADED HOLE DIAMETER | 0.312 INCHES NOMINAL FIRST HOLE | | SPECIAL FEATURES | TAPER SHANK DIAMETER 0.125 PER FT. FROM 2.838 IN. TOP DIA. TO 2.750 IN. BOTTOM DIA. | | THREAD LENGTH | 2.938 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 4 | | THREAD SERIES DESIGNATOR | UNC | | WIDTH BETWEEN FLATS | 3.875 INCHES NOMINAL | | SURFACE FINISH | 63.0 MICROINCHES GRIP | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND |
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