| FASTENER LENGTH | 0.350 INCHES MINIMUM AND 0.380 INCHES MAXIMUM |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD DIAMETER | 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| HEAD HEIGHT | 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM |
| HEAD STYLE | PAN |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MATERIAL | STEEL COMP 1022 OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, THREAD FORMING |
| PROPRIETARY CHARACTERISTICS | PACS |
| NONMACHINE NOMINAL THREAD DIAMETER | 0.138 INCHES |
| NONMACHINE THREAD STYLE | BLUNT (TYPE TT) |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 168469 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CHROMATE ZINC OVERALL |