4-40 UNC Hand Tap Right Hand, 4 x 40 Threading Hand Tap 3Pcs

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About This 【Size】Shank Diameter: #4, TPI: 40 TPI. 【Feature】Standard thread design, made of alloy tool steel with high hardness and toughness. 【Application】Make or repair thread, su itable for most metals, alloy steel, cast iron ETC. 【Usage】Mainly used for hand use, appropriate addition of coolant can extend the service life when tapping. 【Package Included】4-40 taper tap, plug tap and bottom tap. Show more