ASME Y14-6 pdf download SCREW THREAD REPRESENTATION 1.4 Definitions Definitions of terms are in accordance with ASME B1.7M and the applicable standard. 2 THREAD TYPES 2.1 Straight Threads Straight 60 deg screw thread designations for draw- ings are based on ASME B1.1, ASME B1.15, ASME B1.13M, ASME B1.21M, and ASME B1.10M. Straight pipe thread standards are covered in the documents...