| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.4063 INCHES MINIMUM AND |
| 0.4687 INCHES MAXIMUM |
| FASTENER LENGTH | 1.4063 INCHES MINIMUM AND |
| 1.4687 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 303 OR |
| STEEL COMP 304 OR |
| STEEL COMP XM-7 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582/582M ASSN STD SINGLE MATERIAL RESPONSE OR |
| ASTM A493 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35,TYPE II, TYPE VI OR VII FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | FLAT CHAMFER |
| HEAD DIAMETER | 0.4688 INCHES MINIMUM AND |
| 0.5312 INCHES MAXIMUM |
| HEAD HEIGHT | 0.1875 INCHES MINIMUM AND |
| 0.2499 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.156 INCHES NOMINAL |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER DIAMETER | 0.311 INCHES MINIMUM AND |
| 0.312 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 0.997 INCHES MINIMUM AND |
| 1.003 INCHES MAXIMUM FIRST SHOULDER |
| SPECIFICATION/STANDARD DATA | 96906-MIL-S-51576 GOVERNMENT SPECIFICATION |
| SPEC/STD CONTROLLING DATA | |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS51576 |
| MANUFACTURERS CODE | 96906 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS51576-29 |