| THREAD DIRECTION | RIGHT-HAND |
| FASTENER LENGTH | 1.875 INCHES NOMINAL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| THREAD LENGTH | 0.625 INCHES NOMINAL |
| HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.190 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3A |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| HARDNESS RATING | 248.0 BRINELL STANDARD MINIMUM AND |
| 341.0 BRINELL STANDARD MAXIMUM OVERALL |
| MINIMUM TENSILE STRENGTH | 130000 POUNDS PER SQUARE INCH |
| MINIMUM YIELD STRENGTH | 85000 POUNDS PER SQUARE INCH |
| HEAD HEIGHT | 0.260 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.243 INCHES MINIMUM AND |
| 0.251 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.375 INCHES NOMINAL |
| EXTENDED WASHER THICKNESS | 0.040 INCHES MINIMUM AND |
| 0.050 INCHES MAXIMUM |
| GRIP LENGTH | 1.250 INCHES NOMINAL |
| FEATURES PROVIDED | FINISHED HEAD |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, MACHINE |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 96906 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS21279-27 |