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2-1/8" X 1/2" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Two "wings" on the base

SKU 42845039535
4.1
Description

Two "wings" on the base of the shank help it resist being twisted or pulled out of the handle

Internal Thread: 7/16"-14

Grade: Cobalt

Grade 8 Flat & Lock Washers

Pieces in Set 4

2-1/8" X 1/2" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Two "wings" on the baseProduct 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

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