|
|
|
National Stock Number:
5306-01-442-3768
Federal Supply Class:
5306
National Item Identification Number:
014423768
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.
|
Manufacturer Information:
| 2141715-44 | 96169 | ELECTRIC BOAT CORPORATION | | MIL-B-857 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
|
Techincal Specification:
| THREAD DIRECTION | RIGHT-HAND | | FASTENER LENGTH | 3.000 INCHES NOMINAL | | MATERIAL | NICKEL ALLOY 400 OVERALL | | THREAD LENGTH | 1.750 INCHES NOMINAL | | HEAD STYLE | HEXAGON | | THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 21 | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281, CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | HARDNESS RATING | 80.0 ROCKWELL B MINIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 80000 POUNDS PER SQUARE INCH | | MINIMUM YIELD STRENGTH | 40000 MEGAPASCALS | | HEAD HEIGHT | 0.150 INCHES MINIMUM AND | | 0.163 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND | | 0.438 INCHES MAXIMUM | | SPECIFICATION/STANDARD DATA | 81349-MIL-B-857/SUPERCEDED/ GOVERNMENT SPECIFICATION | | NONDEFINITIVE SPEC/STD DATA | III TYPE | | SPEC/STD CONTROLLING DATA | | | MANUFACTURERS CODE | 81349 | | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-B-857 |
|
|