| COLOR | BLACK OVERALL |
| FASTENER LENGTH | 0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.105 INCHES MINIMUM AND 0.120 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE 1022 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 1022 OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, .010-32 X .50 HEDWHD .40D STL PLD HURRHD TAP-R |
| PROPRIETARY CHARACTERISTICS | PACS |
| NONMACHINE NOMINAL THREAD DIAMETER | 0.190 INCHES |
| NONMACHINE THREAD STYLE | DOG TYPE (TYPE B OR C) |
| WIDTH ACROSS FLATS | 0.305 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.340 INCHES MINIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MILLER SPEC 168469 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |