| THREAD SERIES DESIGNATOR | M |
| THREAD LENGTH | 26.0 MILLIMETERS MINIMUM AND |
| 34.0 MILLIMETERS MAXIMUM |
| FASTENER LENGTH | 55.0 MILLIMETERS NOMINAL |
| MATERIAL | STEEL OVERALL |
| HEAD STYLE | HEXAGON |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD PITCH IN MILLIMETERS | 1.25 |
| EXTERNAL THREAD TOLERANCE CLASS | 6H |
| NONSTANDARD THREAD PITCH DIAMETER | -32.0 TO 50.0 MILLIMETERS |
| SURFACE TREATMENT | ZINC OVERALL |
| HEAD HEIGHT | 6.4 MILLIMETERS NOMINAL |
| WIDTH BETWEEN FLATS | 17.0 MILLIMETERS NOMINAL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | METRIC MEDIUM-STRENGTH STEEL CAP SCREW - CLASS 8.8 |
| SPECIAL FEATURES | PER MCMASTER CARR PART NUMBER HAS MULTIPLE SOURCES AND OEM COULD NOT BE PROVIDED |