THREAD SERIES DESIGNATOR | UNC |
NOMINAL THREAD DIAMETER | 0.312 INCHES |
THREAD QUANTITY PER INCH | 18 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.510 INCHES MINIMUM AND |
| 0.530 INCHES MAXIMUM |
FASTENER LENGTH | 4.530 INCHES MINIMUM AND |
| 4.550 INCHES MAXIMUM |
MATERIAL | STEEL COMP 8740 OVERALL |
MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
SURFACE TREATMENT | CADMIUM OVERALL |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND |
| 32.0 ROCKWELL C MAXIMUM OVERALL |
HEAD STYLE | HEXAGON |
HEAD HEIGHT | 0.271 INCHES MINIMUM AND |
| 0.291 INCHES MAXIMUM |
WIDTH BETWEEN FLATS | 0.492 INCHES MINIMUM AND |
| 0.502 INCHES MAXIMUM |
HOLE CONFIGURATION STYLE | HEXAGON FLATS |
HOLE TYPE | DRILLED |
HOLE QUANTITY | 3 |
HOLE DIAMETER | 0.065 INCHES NOMINAL |
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 6 |
FIRST DIAMETER FROM HEAD | 0.331 INCHES MINIMUM AND |
| 0.335 INCHES MAXIMUM |
SECOND DIAMETER FROM HEAD | 0.232 INCHES MINIMUM AND |
| 0.236 INCHES MAXIMUM |
THIRD DIAMETER FROM HEAD | 0.331 INCHES MINIMUM AND |
| 0.335 INCHES MAXIMUM |
FOURTH DIAMETER FROM HEAD | 0.241 INCHES MINIMUM AND |
| 0.245 INCHES MAXIMUM |
FIFTH DIAMETER FROM HEAD | 0.331 INCHES MINIMUM AND |
| 0.335 INCHES MAXIMUM |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.480 INCHES MINIMUM AND |
| 0.520 INCHES MAXIMUM |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 2.110 INCHES MINIMUM AND |
| 2.150 INCHES MAXIMUM |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 2.270 INCHES MINIMUM AND |
| 2.350 INCHES MAXIMUM |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER | 2.380 INCHES MINIMUM AND |
| 2.470 INCHES MAXIMUM |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIFTH DIAMETER | 2.590 INCHES MINIMUM AND |
| 2.670 INCHES MAXIMUM |
SPECIAL FEATURES | 0.232 IN. MIN,0.236 IN. MAX SIXTH DIA FROM HEAD,4.020 IN. MIN LENGTH FROM LARGEST BEARING SURFACE OF HEAD TO END OF SIXTH DIA |
THE MANUFACTURERS DATA | |
MANUFACTURERS CODE | 00198 |
DESIGN CONTROL REFERENCE | 249280 |