| FASTENER LENGTH | 1.500 INCHES NOMINAL |
| HARDNESS RATING | 60.0 ROCKWELL B MINIMUM OVERALL |
| HEAD HEIGHT | 0.156 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| HEAD STYLE | SQUARE |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A307,GRADE B ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH |
| NONMACHINE NOMINAL THREAD DIAMETER | 0.250 INCHES |
| NONMACHINE THREAD STYLE | FETTER DRIVE (TYPE DR) |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,LAG |
| SHOULDER DIAMETER | 0.250 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER LENGTH | 0.094 INCHES MINIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| WIDTH BETWEEN FLATS | 0.362 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |