Phone: +1 (609) 396-1577 • Toll Free: (877) AMGATTI • Fax: +1 (609) 695-4339 WWW.gatticorp.com • EMAIL: info@gatticorp.com Type 3657 Stainless-steel waterjet orifice retainer. 3/8-24 UNF thread 3/16″ hex key slot For use up to 55,000 PSI.