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National Stock Number:
5306-01-124-6615
Federal Supply Class:
5306
National Item Identification Number:
011246615
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:
| SS5028-04-07 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| THREAD DIRECTION | RIGHT-HAND | | FASTENER LENGTH | 0.890 INCHES MINIMUM AND | | 0.937 INCHES MAXIMUM | | MATERIAL | STEEL COMP 4140 OR | | STEEL COMP 8740 OR | | STEEL COMP 8630 OR | | STEEL COMP 8735 OR | | STEEL COMP 4130 OR | | STEEL COMP 4037 OVERALL | | THREAD LENGTH | 0.499 INCHES MINIMUM AND | | 0.578 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 3A | | SURFACE TREATMENT | CADMIUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TYPE 1 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND | | 32.0 ROCKWELL C MAXIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | HEAD HEIGHT | 0.140 INCHES MINIMUM AND | | 0.172 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND | | 0.440 INCHES MAXIMUM | | LOCKING FEATURE | STRIP THREADS | | GRIP LENGTH | 0.359 INCHES MINIMUM AND | | 0.391 INCHES MAXIMUM | | FEATURES PROVIDED | FINISHED HEAD |
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