| THREAD SERIES DESIGNATOR |
UNF |
| NOMINAL THREAD DIAMETER |
0.190 INCHES |
| THREAD QUANTITY PER INCH |
32 |
| THREAD CLASS |
3A |
| THREAD DIRECTION |
RIGHT-HAND |
| THREAD LENGTH |
0.298 INCHES MINIMUM AND 0.453 INCHES MAXIMUM |
| FASTENER LENGTH |
0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM |
| SCREW MATERIAL |
STEEL COMP 8630 OR STEEL COMP 4037 |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION |
MIL-S-6050 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6300 ASSN STD 2ND MATERIAL RESPONSE |
| SCREW SURFACE TREATMENT |
CADMIUM OR ZINC |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE |
| MINIMUM TENSILE STRENGTH |
125000 POUNDS PER SQUARE INCH |
| HEAD STYLE |
A29 ROUND EXTENDED WASHER |
| HEAD DIAMETER |
0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| HEAD HEIGHT |
0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER |
0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS |
0.025 INCHES MINIMUM AND 0.030 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE |
B1 CROSS RECESS TYPE 1 |