| DISTANCE FROM CENTERLINE TO FLAT | 0.149 INCHES NOMINAL |
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.315 INCHES MINIMUM AND 1.329 INCHES MAXIMUM FIRST HOLE |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER | 0.875 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 0.312 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 0.562 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.125 INCHES NOMINAL |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 4 |
| FASTENER LENGTH | 1.469 INCHES NOMINAL |
| FIRST DIAMETER FROM HEAD | 0.312 INCHES NOMINAL |
| FOURTH DIAMETER FROM HEAD | 0.312 INCHES NOMINAL |
| HEAD DIAMETER | 0.469 INCHES NOMINAL |
| HEAD HEIGHT | 0.185 INCHES NOMINAL |
| HEAD STYLE | DEE |
| MATERIAL DOCUMENT AND CLASSIFICATION | BW-218-M FSCM 06853 MFR REF 1ST MATERIAL RESPONSE OR TS-80-B-37 FSCM 06853 MFR REF 1ST MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OR STEEL COMP 4140 OR STEEL COMP 4037 OVERALL |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY MATERIAL AND HEAD DIMENSIONS |
| SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES NOMINAL FIRST HOLE |
| SPECIAL FEATURES | 1/2 IN. RADIUS ON 3RD DIA FROM HEAD AND HEAT TREATED MFR 06853 147.P |
| THIRD DIAMETER FROM HEAD | 0.285 INCHES NOMINAL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.594 INCHES MINIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 24 |