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National Stock Number:
5306-00-206-4274
Federal Supply Class:
5306
National Item Identification Number:
002064274
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:
| MILB857TYPE2GRADE4 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| THREAD DIRECTION | RIGHT-HAND | | FASTENER LENGTH | 1.719 INCHES MINIMUM AND | | 1.750 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | THREAD LENGTH | 1.519 INCHES MINIMUM AND | | 1.719 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.750 INCHES | | THREAD QUANTITY PER INCH | 10 | | THREAD CLASS | 2A | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-Z-325,TY 2,CL 2 OR 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | HARDNESS RATING | 23.0 ROCKWELL C MINIMUM AND | | 32.0 ROCKWELL C MAXIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 120000 POUNDS PER SQUARE INCH | | HEAD HEIGHT | 0.455 INCHES MINIMUM AND | | 0.483 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 1.088 INCHES MINIMUM AND | | 1.125 INCHES MAXIMUM | | FEATURES PROVIDED | FINISHED HEAD | | NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND | | C5 STYLE | | SPEC/STD CONTROLLING DATA | | | MANUFACTURERS CODE | 81349 | | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MILB857TYPE2GRADE4 |
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