| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 2 |
| FASTENER LENGTH | 0.8750 INCHES NOMINAL |
| FEATURES PROVIDED | LOCK WASHER AND FLAT WASHER |
| HEAD DIAMETER | 0.5000 INCHES NOMINAL |
| HEAD HEIGHT | 0.5625 INCHES NOMINAL |
| HEAD STYLE | KNURLED NO. 5 |
| INTERNAL DRIVE STYLE | SLOT |
| LOCKING FEATURE | LOCKWASHER LOCKING FEATURE |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A581 OR ASTM A582 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE FASTENER |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | THUMBSCREW ASSEMBLY,ROTATIONAL ANGLE BRACKET |
| MATERIAL | STEEL CORROSION RESISTING PRIMARY WASHER |
| MATERIAL | STEEL PROPERTY CLASS 18.8 FASTENER |
| MATERIAL | STEEL PROPERTY CLASS 18.8 LOCKING FEATURE |
| MATERIAL | STEEL PROPERTY CLASS 18.8 SECONDARY WASHER |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.3125 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |