| FASTENER LENGTH | 0.9570 INCHES NOMINAL |
| HEAD HEIGHT | 0.1300 INCHES MINIMUM AND 0.1440 INCHES MAXIMUM |
| HEAD DIAMETER | 0.4730 INCHES MINIMUM AND 0.4920 INCHES MAXIMUM |
| HEAD STYLE | PAN NO. 2 |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5673 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5528 ASSN STD SINGLE MATERIAL RESPONSE SPRING |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| MATERIAL | IRON ALLOY 660 FASTENER |
| MATERIAL | STEEL COMP 631 SPRING |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, PROTRUDING HEAD, SIX LOBE RECESS, TWO LEAD THREAD, POSITIVE HOLD-OUT |
| PROPRIETARY CHARACTERISTICS | PACS |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.2500 INCHES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.6570 INCHES MINIMUM AND 0.6770 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNF |