CARDINAL FASTENER & SPECIALTY CO | 78509 |
NAVAL AIR SYSTEMS COMMAND | 30003 |
THREAD CLASS | 2A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 4.000 INCHES MINIMUM |
FASTENER LENGTH | 7.880 INCHES MINIMUM AND 8.120 INCHES MAXIMUM |
HEAD STYLE | HEXAGON |
HEAD HEIGHT | 0.310 INCHES NOMINAL |
WIDTH BETWEEN FLATS | 0.750 INCHES NOMINAL |
NOMINAL THREAD DIAMETER | 0.500 INCHES |
FEATURES PROVIDED | FINISHED HEAD |
THREAD QUANTITY PER INCH | 20 |
MATERIAL | STEEL OVERALL |
MATERIAL DOCUMENT AND CLASSIFICATION | SAE J429 GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
THREAD SERIES DESIGNATOR | UNF |
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of .19 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; and SCREW, CAP, SOCKET HEAD. |