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National Stock Number:
5306-01-272-5795
Federal Supply Class:
5306
National Item Identification Number:
012725795
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:
| M24240/4-20406 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | MIL-S-24240/4-20406 | 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 | 0.734 INCHES MINIMUM AND | | 0.766 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | THREAD LENGTH | 0.734 INCHES MINIMUM AND | | 0.766 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER | | THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | SURFACE TREATMENT | CADMIUM OVERALL | | HEAD HEIGHT | 0.244 INCHES MINIMUM AND | | 0.250 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.249 INCHES MINIMUM AND | | 0.253 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.365 INCHES MINIMUM AND | | 0.375 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.068 INCHES MINIMUM AND | | 0.088 INCHES MAXIMUM | | GRIP LENGTH | 0.734 INCHES MINIMUM AND | | 0.766 INCHES MAXIMUM | | SPECIAL FEATURES | CONSTRUCTION OF EXTENDED WASHER IS OPTIONAL | | SPECIFICATION/STANDARD DATA | 81349-MIL-S-24240/4 GOVERNMENT SPECIFICATION | | SPEC/STD CONTROLLING DATA | | | DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-S-24240/4-20406 | | MANUFACTURERS CODE | 81349 | | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | M24240/4-20406 |
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