This standard specifies the requirements, testing methods, inspection rules, marking, packaging and storage of wheeled tractor steering system ball pins (hereinafter referred to as ball pins). This standard applies to ball studs for wheeled tractors and their variants.
NY/T 1122-2006 Referenced Document
GB/T 1800.3-1998 Limits and fits--Bases--Part 3: Numerical values tables of standard toleranes and fundamental deviations
GB/T 197-2003 General purpose metric screw threads--Tolerances
GB/T 2828.1-2003 Sampling procedures for inspection by attributes--Part 1: Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection