| FASTENER LENGTH | 1.600 INCHES MINIMUM AND 1.600 INCHES MINIMUM AND 1.780 INCHES MAXIMUM1.780 INCHES MAXIMUM |
| GRIP LENGTH | 0.720 INCHES NOMINAL0.720 INCHES NOMINAL |
| HARDNESS RATING | 23.0 ROCKWELL C MINIMUM AND 23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL32.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.195 INCHES MINIMUM AND 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM0.211 INCHES MAXIMUM |
| HEAD STYLE | HEXAGONHEXAGON |
| MATERIAL | STEEL COMP 1030 OR STEEL COMP 1030 OR STEEL COMP 1031 OR STEEL COMP 1031 OR STEEL COMP 1033 OR STEEL COMP 1033 OR STEEL COMP 1034 OVERALLSTEEL COMP 1034 OVERALL |
| NOMINAL THREAD DIAMETER | 0.312 INCHES0.312 INCHES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | BX-13 MFR REF SINGLE TREATMENT RESPONSE OVERALLBX-13 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | DICHROMATE OVERALLDICHROMATE OVERALL |
| THREAD CLASS | 2A2A |
| THREAD DIRECTION | RIGHT-HANDRIGHT-HAND |
| THREAD LENGTH | 0.880 INCHES NOMINAL0.880 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNFUNF |
| THREAD QUANTITY PER INCH | 2424 |
| WIDTH BETWEEN FLATS | 0.489 INCHES MINIMUM AND 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM0.500 INCHES MAXIMUM |