| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.2500 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.403 INCHES NOMINAL |
| FASTENER LENGTH | 0.700 INCHES MINIMUM AND |
| 0.730 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 4140 AND |
| STEEL COMP 4340 OR |
| STEEL COMP 8740 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6349 OR 6382 ASSN STD 1ST MATERIAL RESPONSE OR |
| AMS 6484 OR 6415 ASSN STD 2ND MATERIAL RESPONSE OR |
| AMS 6322, 6325, OR 6327 ASSN STD 3RD MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-416, TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | FLAT COUNTERSUNK |
| HEAD DIAMETER | 0.5066 INCHES NOMINAL |
| HEAD HEIGHT | 0.099 INCHES NOMINAL |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND |
| 101.0 DEGREES MAXIMUM |
| INTERNAL DRIVE STYLE | TORQUE-SET RIBBED |
| GRIP LENGTH | 0.302 INCHES MINIMUM AND |
| 0.322 INCHES MAXIMUM |
| GRIP DIAMETER | 0.2641 INCHES MINIMUM AND |
| 0.2651 INCHES MAXIMUM |
| SPECIFICATION/STANDARD DATA | 80205-NAS1580 NATIONAL STD/SPEC |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT,SHEAR, 100 DEG FLUSH HEAD, OFFSET CRUCIFORM, OFFSET CRUCIFORM-RIBBED AND DOVETAIL SLOT, 95 KSI FSU |