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National Stock Number:
5306-01-197-3084
Federal Supply Class:
5306
National Item Identification Number:
011973084
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:
| UM9944 | 61208 | TWIN DISC, INCORPORATED |
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Techincal Specification:
| EXTENDED WASHER THICKNESS | 0.081 INCHES MINIMUM AND 0.101 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.639 INCHES MINIMUM AND 0.649 INCHES MAXIMUM | | FASTENER LENGTH | 1.750 INCHES NOMINAL | | FEATURES PROVIDED | FINISHED HEAD | | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL | | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.278 INCHES | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 1.250 INCHES MINIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 16 |
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