3/8" BSPT Somta High Speed Steel Tap 2320950 1/2 UNC Imperial 20 Piece

1/2 UNC Imperial 20 Piece Zinc Plated hex Bolt & Set Screw selection pack

koken - 3/8" dr hex socket set on rail - 8pc 3-12mm (100mm length) 3010m-100 hex bit sockets - 3

but for internal diameters twice the tape thickness has to be subtracted

1/2 x 3/4 x 5 Pieces Serrated Hex Flange Bolts & Nuts Zinc Plated

Model # SI5500 Specifications Chuck: 10mm keyed

3/8" BSPT Somta High Speed Steel Tap 2320950 1/2 UNC Imperial 20 PieceTaper thread, British Standard Pipe Taper thread (BSPT), whose diameter increases or decreases along the length of the thread. For producing precision threads by hand tapping, for starting threads either second or bottoming taps should used after to achieve desire thread depth. Taper pipe reamer recommended prior to tapping Rc (BSPT) thread forms General purpose use Threads per inch 19 Overall length 75mm Cutting length 21mm Drill diameter 14. 75mm