| HEAD DIAMETER | 0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM |
| HEAD HEIGHT | 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM |
| HEAD STYLE | PAN |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| LOCKING FEATURE | PATCH THREADS OR PELLET THREADS OR STRIP THREADS |
| MATERIAL | PLASTIC LOCKING FEATURE |
| MATERIAL | STEEL COMP 301 FASTENER OR STEEL COMP 302 FASTENER OR STEEL COMP 302B FASTENER OR STEEL COMP 303 FASTENER OR STEEL COMP 303SE FASTENER OR STEEL COMP 304 FASTENER OR STEEL COMP 304L FASTENER OR STEEL COMP 305 FASTENER OR STEEL COMP 308 FASTENER OR STEEL COMP 309 FASTENER OR STEEL COMP 309S FASTENER OR STEEL COMP 310 FASTENER OR STEEL COMP 310S FASTENER OR STEEL COMP 314 FASTENER OR STEEL COMP 316L FASTENER OR STEEL COMP 317 FASTENER OR STEEL COMP 321 FASTENER OR STEEL COMP 347 FASTENER OR STEEL COMP 348 FASTENER OR STEEL COMP 384 FASTENER OR STEEL COMP 385 FASTENER |
| MINIMUM TENSILE STRENGTH | 80000 POUNDS PER SQUARE INCH |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.407 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNC |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| SURFACE TREATMENT | PASSIVATE FASTENER |
| FASTENER LENGTH | 0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |