Recommended feed rate: Hard steel: 5-10m/min, cast iron: 8-10m/min, ordinary steel: 6-15m/min. Burkit 11/16"-28 UN Tap And Die Set, 11/16 X 28 UN Machine Thread Tap Applications]Correct or clean the external threads, widely used in thread repair and other processing. Burkit 1/2-18 UNS Tap and Die Set Right Hand, 1/2 x 18... M14 X 1.25 Metric Round Threading Die - Alloy Steel Right Hand Machine R 428843 It is used to process threads of various through holes or shallow blind holes, and blind holes cannot be processed. 11/16" X 18 TPI UNS L/H. £35.00. Type/Size Select an option... PLUG TAP HSS – L/H , Price – £35.00. 11/16" X 18 TPI UN Suggest: Appropriate lubricating oil should be added to the die-cutting edge when cutting, It is to be reversed every 1/4~1/2 turn to facilitate chip discharge from the chip hole. Generally used in conjunction with tapping machines, integrated bench drills, CNC lathes, machining centers, etc. The conical keyhole has a strong locking force and is not easy to loosen. About Taps: Straight flute design, made of 6542 high speed steel. Applications: Widely used in cast iron, copper, brass, abrasive steel, A3 steel, and other metal materials to process threads. Package Include: 1 set 11/16-18 UNS Tap&Die. Die Material: Alloy Tool Steel. Tap Material: High Speed Steel. Package Include: 1pc 11/16-18 tap, 1pc 11/16-18 die. When in use, the conical locking hole of the die is aligned with the screw of the wrench and tightened.