0.041667→ Basic form 1/2 tolerance on maior dameter of screw olerance In practice.crests may be partially or fully rounded 1/2 PD tolerance on nut Basic 1/2 PD tolerance on screw orm ance 圆上海夫通大学 OUTLINE Power Screw Introduction © Basic Terminology ©Torque Loading ©Other issues 1919 OUTLINE Power Screw Introduction Basic Terminology Torque Loading Other issues