2687404700040 Weld Tube Yoke 47.6×135 , 2040 Ser’ 68740 Fits Tube: 100×3.875 Butt Diameter: 92.25

The 2687404700040 is a metric heavy-duty weld tube yoke in the 68740/2040 series, designed for commercial vehicle driveshafts running 100mm OD tubing. This part number convention (26-87-40-47-00040) encodes the series, tube OD, and sequence information in the part number itself, a convention used by several European driveshaft manufacturers.

A 3.875mm wall on a 100mm OD tube is a heavy wall specification. Thin-wall tubes for this OD are typically 2.5-3mm; a 3.875mm wall significantly increases the section modulus and torsional stiffness of the shaft. This is used on applications where the shaft must handle high torque or where the tube length approaches the critical speed limit for the OD.

The 92.25mm butt diameter is the yoke pilot that seats inside the tube bore. For 100mm OD x 3.875mm wall, the ID is approximately 92.25mm, making this a close-tolerance slip fit. Confirm your tube's actual bore before ordering. Weld procedures for heavy-wall metric tubes should follow the tube manufacturer's specifications for preheat and filler selection.

See weld yokes.