7/8" X 3/16" HSS Aircraft Counterbore 1/4" Shank BoltsandNuts.com Part Number DMS04-8028

Part Number DMS04-8028

Part Number: 75C800HCS8Y/USA

They provide a stable and precise point of contact

Class 8 Stainless Steel Hex Nuts Zinc

Part Number: 75C450SHB307G

7/8" X 3/16" HSS Aircraft Counterbore 1/4" Shank BoltsandNuts.com Part Number DMS04-8028Product 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