M24 x 3 x 80 mm Coarse Class 10.9 Zinc Plated Steel Hex Head Cap ScrewCap Screws are proportioned and toleranced to assure full and proper loading when assembled into a tapped hole. A washer face is provided under the head to provide a bearing surface when tightened. this feature ensures proper fit up into tapped holes without counterboring. Cap screws feature a chamfered end to aid in inserting into a tapped hole. Hex head cap screws are available in a variety of material grades, including: Grade 2, Grade 5, Grade 8