ZF INDUSTRIEANTRIEBE WITTEN GMBH | D9182 |
NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | 80205 |
MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | 96906 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.563 INCHES MINIMUM |
FASTENER LENGTH | 1.438 INCHES NOMINAL |
HEAD STYLE | BEVEL-CONICAL |
HEAD DIAMETER | 0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM |
HEAD HEIGHT | 0.312 INCHES NOMINAL |
INTERNAL DRIVE STYLE | HEXAGON |
NOMINAL THREAD DIAMETER | 0.312 INCHES |
WIDTH ACROSS FLATS | 0.219 INCHES MINIMUM AND 0.221 INCHES MAXIMUM |
THREAD QUANTITY PER INCH | 24 |
MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
HARDNESS RATING | 24.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL |
MATERIAL | STEEL OVERALL |
SURFACE TREATMENT | CADMIUM OVERALL OR CHROMIUM OVERALL |
THREAD SERIES DESIGNATOR | UNF |
An externally threaded fastener whose threaded portion is of one nominal diameter, No. 1 ( .19 IN.) (5 mm) or larger. It is designed with an internal socket or internal multiple spline for use with an internal driver. The head is beveled (conical) or cylindrical in shape. Items with cylindrical shaped heads must have an externally relieved body. A locking feature may be incorporated in the design of the head or threads. See also SCREW, CAP, SOCKET HEAD. Excludes SETSCREW; SCREW, SHOULDER; BOLT, SHOULDER; SCREW, EXTERNALLY RELIEVED BODY; BOLT, EXTERNALLY RELIEVED BODY; and SCREW, MACHINE. |