Thomas Machine & Foundry > Fraser Marine Products > Handrail Socket Handrail Socket Handrail Socket Aluminum handrail socket size for 1.5″ Schedule 40 pipe. Commonly used for ladder stanchions or railing terminations. Weld or bolt down for secure installation. View Handrail Socket Drawing Request A Quote Back to All Products Get in TouchWhether you need casting, precision machining, or finishing services, Thomas Machine & Foundry is here to help. Request A Quote