| EXTENDED WASHER DIAMETER | 0.771 INCHES MINIMUM AND 0.793 INCHES MAXIMUM |
| FASTENER LENGTH | 1.710 INCHES MINIMUM AND 1.770 INCHES MAXIMUM |
| HEAD HEIGHT | 0.307 INCHES MINIMUM AND 0.331 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON EXTENDED WASHER |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | 3/8 - 16 CASE HARDENED ZINC FLANG BOLT |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 120000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| SHOULDER SHAPE | ROUND OVERALL |
| WIDTH BETWEEN FLATS | 0.552 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.710 INCHES MINIMUM AND 1.770 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 16 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |