Part Number A57019-1-135-AS-PSM having (CAGE Code 32869) and FSC 5305 Screws in stock with ready to ship. Get an instant quote for A57019-1-135-AS-PSM Screw Adjusting Valve by O C Keckley Company. Fill the form below with your desired order quantity, targeted price and the expected order-fulfilment date. Our dedicated account manager will get back to you within 15 minutes.