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Re: Carbide drill bits
Posted to Tool & Equipment Forum on 1/8/2023 8 Replies

I am surprised you need carbide for a bolt. I have had success drilling Grade 8s and DIN 10.9s with a quality, sharp HSS bit turning at the proper speed for the drill size. I routinely use Tap-Magic cutting fluid with good success.

Not all HSS bits are the s... Login to read more.

8 Replies Received (View Replies)