| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5625 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| HEAD HEIGHT | 0.320 INCHES MINIMUM AND |
| 0.340 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.304 INCHES MINIMUM AND |
| 0.313 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.428 INCHES MINIMUM AND |
| 0.448 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.060 INCHES MINIMUM AND |
| 0.070 INCHES MAXIMUM |
| GRIP LENGTH | 3.449 INCHES MINIMUM AND |
| 3.550 INCHES MAXIMUM |
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.860 INCHES NOMINAL FIRST HOLE |
| SHANK UNTHREADED HOLE DIAMETER | 0.060 INCHES MINIMUM AND |
| 0.080 INCHES MAXIMUM FIRST HOLE |
| FEATURES PROVIDED | FINISHED HEAD |
| SPECIAL FEATURES | TAPPED HOLE IN HEAD ALONG LONGITUDINAL AXIS 0.190-24 NC-2B BY 0.200 IN. DEEP |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| THREAD DIRECTION | RIGHT-HAND |
| FASTENER LENGTH | 3.960 INCHES MINIMUM AND |
| 3.980 INCHES MAXIMUM |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| THREAD LENGTH | 0.430 INCHES MINIMUM AND |
| 0.511 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |