SIEMENS - SINUMERIK-SINUTRAIN Programming of External Thread Turning - Cycle 99 - N- 3/4" - 16 UNF

#Thread turning (CYCLE99): External Threading operation: N- 3/4" - 10 UNF UNC and UNF - Unified Inch Screw Threads: The most common types of UN (Unified National) thread are: UNC – Unified National Coarse Thread, comparable with the ISO metric thread UNF – Unified National Fine Thread Female and Male UNC/UNF threads are both parallel The UNC/UNF flank angle is 60° How are threads designated? 3/4" (Nominal Size) – 16 (Threads per inch) UNF (Thread series) When would I use a UNF thread? On thin-walled material. When resistance to loosening is important. For fine adjustment. For short lengths of engagement. To increase the shear strength of the bolt. When would I use a UNC thread? On ductile, soft or brittle materials. The thread bites deeply into the bolt. Resists stripping. When fast assembly is required. Thread table: https://eicac.co.uk/Imperial-Threads https://www.samtectools.com/pdf/threa... https://www.cbideal.com.au/n/info/use... The "Longitudinal thread", "Tapered thread" or "Face thread" cycle is used to turn external or internal threads with a constant or variable pitch. There may be single or multiple threads. #SINUTRAIN #SIEMENS828D/840D #Cycle98 #Cycle99 #LongitudinalThread #TaperedThread #FaceThread #Threadchain #SINUMERIK #SIEMENS #Threadcycles #Threadingoperation #ExteranlThread #InternalThread #ISOMETRIC #Whitworth BSW #Whitworth BSP #UNC #Programmingguide #Threadturning