| SHOULDER LENGTH | 1.410 INCHES MINIMUM FIRST SHOULDER AND 1.440 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SPECIAL FEATURES | SURFACE HARDNESS R15N 80 MAX. |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ES-203 CAGEC 18889 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PAINT OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.870 INCHES MINIMUM AND 1.930 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 16 |
| THREAD SERIES DESIGNATOR | UN |
| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.190 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| COLOR | YELLOW OVERALL |
| FASTENER LENGTH | 3.620 INCHES MINIMUM AND 3.650 INCHES MAXIMUM |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM OVERALL AND 39.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD DIAMETER | 1.570 INCHES MINIMUM AND 1.630 INCHES MAXIMUM |
| HEAD HEIGHT | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| HEAD STYLE | BEVEL-CONICAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE J429 GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| PROPRIETARY CHARACTERISTICS | PACS |
| MINIMUM TENSILE STRENGTH | 133400 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 1.125 INCHES |
| RIB QUANTITY | 48 |
| RIB LENGTH | 0.690 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
| RIB MAJOR DIAMETER | 1.244 INCHES MINIMUM AND 1.252 INCHES MAXIMUM |
| SHOULDER DIAMETER | 1.218 INCHES MINIMUM FIRST SHOULDER AND 1.222 INCHES MAXIMUM FIRST SHOULDER |