Category: Tools & Home Improvement Vendor: 4 - 40 Tap + No. 43 Drill Black oxide finish on all high carbon steel Hanson taps Oxide surface-coating reduces tendency for ch Product Description : From the ManufacturerDrill and Tap Packs, include 4 - 40 Tap + No. 43-Drill. Black oxide finish on all high carbon steel Hanson taps with semi-porous matte surface that causes cutting oil to cling, carrying the oil into the cut more effectively, thus reducing the drive torque required and lowering cutting temperatures. Oxide surface-coating also reduces tendency for chips to weld to the Tap, resulting in lower cutting temperatures and freer chip flow to increase tool life. Irwin tools are made of only the finest materials, manufactured to exacting tolerances. Product Description : High speed steel drill bits ensure fat, precise drilling. High carbon steel taps are ideal for general purpose threading. Matching bit and tap provide proper hole size for easier tapping and stronger threads.
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