Cortical Bone Screws 3.5mm Diameter - Self Tapping Stainless Steel:

• 8mm - 50mm in length.
• Screw diameter 3.5mm
• Core diameter 2.4mm
• Head diameter 6.0mm

Use the following drill bits, taps and screwdrivers:

• Use 2.5mm pilot hole.
• Use 3.5mm clearance hole.
• Use 3.5mm tap.
• Use 2.5mm hex head screwdriver.

Other brands also available here: 

GVPME-MT-SS1035020