This part of GB/T 19408 specifies the technical requirements for non-oscillating U-hooks, which are used to connect agricultural traction vehicles equipped with swivel hitch rings (defined in GB/T 32538.3-2020). This part is applicable to the connection of agricultural traction vehicles equipped with rotating hitch rings (defined in GB/T32538.3-2020).
GB/T 19408.6-2020 Referenced Document
GB/T 1592 Agricultural tractors--Rear-mounted power take-off-types 1,2 and 3
GB/T 19408.6-2020 history
2020GB/T 19408.6-2020 Agricultural vehicles—Mechanical connections between towed and towing vehicles—Part 6:Specifications for non-swivel clevis couplings