| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.636 INCHES MINIMUM AND 0.666 INCHES MAXIMUM |
| HEAD HEIGHT | 0.068 INCHES NOMINAL |
| HEAD DIAMETER | 0.323 INCHES MINIMUM AND 0.334 INCHES MAXIMUM |
| HEAD STYLE | FILLISTER COUNTERSUNK |
| INTERNAL DRIVE STYLE | OFFSET CRUCIFORM RIBBED |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,MACHINE,FLAT 100 DEG HEAD,SHORT THREAD,OFFSET CRUCIFORM |
| NOMINAL THREAD DIAMETER | 0.1640 INCHES |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731,5732,5737 OR 5853 ASSN STD SINGLE MATERIAL RESPONSE |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2700,METHOD 1,CLASS 4 ASSN STD SINGLE TREATMENT RESPONSE |
| SCREW MATERIAL | IRON ALLOY 660 |
| SCREW SURFACE TREATMENT | PASSIVATE |
| SPECIFICATION/STANDARD DATA | 80205-NAS1620 THRU NAS1628 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| THREAD LENGTH | 0.276 INCHES NOMINAL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNJC |