Specification for screwed studs-Recommendations for high grade studs (with Class 5 interference fit threads to American Standard ASA B1.12)
螺纹螺柱规范 高等级螺柱(具有符合美国标准ASA B1.12的5级过盈配合螺纹)的建议
Gives dimensions and tolerances for external and internal interference fit (Class 5) threads of modified Unified form in the coarse thread series intended for studs in diameters from 3/16 in to 1½ in; engagement lengths and torques for use when screwing into different materials; recommended general conditions of use and inspection.Cross References:BS 1768