2-7/8" X 1/2" Pilot Hole HSS Straight Shank Counterbore Quantity:1 these rivets are made from

these rivets are made from tough 4135 chrome molybdenum steel

Part Number DWRRETS1-1/32

and a 180-degree bend towards the tip

Part Number DWRRHD15/16

Size #4-64

2-7/8" X 1/2" Pilot Hole HSS Straight Shank Counterbore Quantity:1 these rivets are made fromProduct Description Counterboring is the enlargement of a portion of a hole that has previously been formed. If the counterbored portion is shallow (1 8" or less), the operations is usually known as spot facing; for example, a flat seat for a bolt head or nut. If, on the other hand, the hole is enlarged to a considerable depth, it is designated as counterboring. These counterbores are made of two piece construction, having an integral shank and