Machine Screws Thread Dimensions
Machine Screws Thread Dimensions L L Major Dia Pitch Dia Minor Dia Axis of screw thread 2A External Threads for Machine Screws and SEMS ASME B 2021 Nominal Size / Thread TPI Type Major Diameter Allowance Max Min Pitch Diameter Max Min Tolerance Tensile Strength Stress Area in 2 lb min Steel screws only 0 80 UNF 0005 0595 0563 0514 0496 001762 1 64