| NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | 80205 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.250 INCHES MINIMUM |
| FASTENER LENGTH | 1.272 INCHES MINIMUM AND 1.312 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| HEAD DIAMETER | 0.550 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| HEAD HEIGHT | 0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| HOLE DIAMETER | 0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | HEXAGON |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| WIDTH ACROSS FLATS | 0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM |
| HOLE QUANTITY | 6 |
| HOLE TYPE | DRILLED |
| THREAD QUANTITY PER INCH | 24 |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| HARDNESS RATING | 39.0 ROCKWELL C MINIMUM OVERALL AND 42.0 ROCKWELL C MAXIMUM OVERALL |
| HOLE CONFIGURATION STYLE | ROUND INTERNAL HEXAGON |
| MATERIAL | STEEL 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 | UNRF |
| SPECIFICATION/STANDARD DATA | 80205-NAS1351 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE. |
