SAE J2638-2003 PDF

Scope: This document establishes minimum performance criteria and definition of terms for the towing interface between a towing vehicle and fifth wheel or gooseneck trailer at or below 13 608 kg (30 000 lb) gross trailer weight. This establishes criteria for the hitch, tow vehicle attachment structure, trailer attachment structure, and coupling. This document is intended as a guide for manufacturers of fifth wheel and/or gooseneck trailers at or below 13 608 kg (30 000 lb) gross trailer weight and of tow vehicles and of components necessary to tow these trailers. Regulatory authorities desiring to formulate regulations may use this standard as a guide. This document is also intended for voluntary use by others associated with manufacturing of these products.

SAE J2638-2003 Referenced Document

ISO 3853:1994 Road vehicles - Towing vehicle coupling device to tow caravans or light trailers - Mechanical strength test
ISO 8717:2000 Commercial road vehicles - Fifth wheel couplings - Strength tests
SAE J133-2003 (R) Fifth Wheel Kingpin PerformanceCommercial Trailers and Semitrailers
SAE J670 Vehicle Dynamics Terminology*， 2022-06-09 Update
SAE J684-1998 Trailer Couplings, Hitches and Safety Chains Automotive Type
SAE J700-2001 Upper Coupler Kingpin—Commercial Trailers and Semitrailers

2017 SAE J2638-2017 Fifth Wheel and Gooseneck Attachment Performance Up to 13 608/kg (30 000/lb) Trailer GVW
2003 SAE J2638-2003 Fifth Wheel and Gooseneck Attachment Performance Up to 13 608/kg (30 000/lb) Trailer GVW