13/32" X 1/8" HSS Aircraft Counterbore 1/4" Shank Quantity:1 Size 59/64"

Size 59/64"

Part Number CTH1500

316 Stainless Steel Button Socket Head Cap Screws w/ 40 Hole Bin

Part Number: EZ-EZ-450-12

Part Number: 50D500HLGSS/316

13/32" X 1/8" HSS Aircraft Counterbore 1/4" Shank Quantity:1 Size 59/64"Product 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