1. Center and spotting drills are traditionally used to make a conical hole for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking.
2. Used for producing center holds in components or work pieces with require machining between centers.
وصف
Combination Drill & Taps
Drill Bit 60 Degree Combined Countersinks Angle Bit Metal Drill Bit 1Set
Specification:
Type: Center Drill Bit
Material: High Speed Steel
Degrees: 60
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