| FASTENER LENGTH | 1.250 INCHES NOMINAL |
| HEAD HEIGHT | 0.60 INCHES MINIMUM AND 0.64 INCHES MAXIMUM |
| HEAD STYLE | THUMB NO. 4 |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM F593,ALLOY GROUP 1,DEFAULT CONDITION CW ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD DIAMETER | 0.3125 INCHES |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | TYPE B,REGULAR THUMB SCREW |
| POINT DIAMETER | 0.3125 INCHES NOMINAL |
| POINT STYLE | FLAT |
| SPECIFICATION/STANDARD DATA | 05047-ASME B18.24-2015 NATIONAL STD/SPEC |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.250 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH BETWEEN FLATS | 0.91 INCHES MINIMUM AND 0.96 INCHES MAXIMUM |