SKU: 66995486119
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drill in and out and de-burr in one motion
1/2 UNF Imperial 20 Piece Zinc Plated hex Bolt & Set Screw selection pack
designed for shallow cuts such as slotting screw and bolt heads or machine slots into work pieces M-2 Grade High Speed Steel
Thread and flute configuration designed for high tensile materials such as Tool Steels
75 x 40 Metric Coarse x 25 Pieces Serrated Hex Flange Bolts & Nuts Zinc Plated
1/2" UNF HSS L/H Taper Tap 6481230 drill in and out andFor producing precision Left Hand threads by hand tapping, for starting threads either second or bottoming taps should used after to achieve desire thread depth. General purpose use Suitable for materials up to 1000N mm2 Through & blind holes Suitable for both hand and machine operations Threads per inch 20 Overall length 89mm Cutting length 29mm Drill diameter 11. 5mm