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National Stock Number:
5306-00-355-6494
Federal Supply Class:
5306
National Item Identification Number:
003556494
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:
| D2777MARK8SH4 | 81336 | CHIEF OF ENGINEERS DEPT OF ARMY |
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Techincal Specification:
| DEPARTURE FROM CITED DOCUMENT | AS MODIFIED IN REPLIES THD CLASS,AND LG | | FASTENER LENGTH | 2.750 INCHES NOMINAL | | FEATURES PROVIDED | UNFINISHED HEAD | | GRIP LENGTH | 1.000 INCHES NOMINAL | | HEAD HEIGHT | 0.812 INCHES MINIMUM AND 0.876 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL | STEEL OVERALL | | MINIMUM YIELD STRENGTH | 30000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 1.250 INCHES | | NONDEFINITIVE SPEC/STD DATA | B1 TYPE | | SPECIAL FEATURES | ONE HEX NUT | | WIDTH BETWEEN FLATS | 1.813 INCHES MINIMUM AND 1.875 INCHES MAXIMUM | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.750 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 7 | | THREAD SERIES DESIGNATOR | UNC |
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