ITEM: 5/8 Head Diam, 3/4 Shank Diam, 8 Overall Length, Counterbore Pilot MSC. MANUFACTURER: MSC. BRAND: MSC. MANUFACTURER PART: 18620. 5/8 Head Diam, 3/4 Shank Diam, 8 Overall Length, Counterbore Pilot 2 Long Shank, Bright Finish, High Speed Steel (MOQ1, Pkg Qty1)CATEGORIES: Maintenance, Repair and Operational (MRO) Supplies. Countersinks, Chamfer Mills & Back Chamfers. Countersink Accessories. Countersink Pilots. N/A. TOTAL RECYCLED CONTENT: 10.00%. POSTCONSUMER RECYCLED CONTENT: 1.00%. KEYWORDS: MSCCountersinks, Chamfer Mills & Back ChamfersCountersink AccessoriesCountersink PilotsN/A.