The Peterson 3.500" internal-spline guide washer (1/8" thick) is designed for use with long spline drive caps and is compatible with 33-tooth HTD belt systems. It supplies internal spline engagement and positional support in spline-drive assemblies, simplifying installation and helping keep mandrel and pulley components properly aligned.
Peterson Fluid Systems Guide Washer Splined 3.5 x 1/8