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Peterson Fluid Systems supplies this short spline drive cap with a 0.50" (1/2") spline length, nut, and a 2.750" OD washer. The assembly is specified for spline-drive installations needing a short spline engagement and includes the matching washer for correct spacing. It’s a direct replacement cap package for spline-based drive setups.
Peterson Fluid Systems Drive Washer Cap Nut 2.750
