Carlson H1500 Drum Brake Adjusting Screw Assembly

Carlson H1500 Drum Brake Adjusting Screw Assembly is a replacement component for classic drum brake systems, designed to set and maintain the correct shoe-to-drum clearance in Carlson-branded assemblies. Documented usage includes Ford F-series trucks from the late 1950s to the mid-1960s with 11-inch or 12-inch drums; examples include Front Left variants for the Ford F-350 (1957–1966) with 12-inch drums and Rear Right variants for the Ford F-100 (1959–1966) with 11-inch drums. Retail listings show dimensional details such as a 12.12-inch length with a 2-inch cross-section for the F-350 variant, and other listings note 11-inch drums with 1.75-inch shoe clearance for the F-100 variant. The H1500 label also appears on parts listings associated with International models (C1200, D1100, AB1200), indicating broader applicability to older trucks and commercial vehicles that used Carlson drum brakes. These entries represent Carlson’s brake hardware family and identify H1500 as the specific drum-brake adjusting screw assembly portion used to refurbish worn or damaged adjuster components on eligible backing plates.