Nut (1), Plain, Slotted, Hexagon This RFQ was sourced on www.MFG.com in USA for Slotted Nuts Buyer is in search of a 1 1/2-12 UNF-2B nut. Buyer Information Industry City/Region St. Petersburg, Florida Country USA RFQ RFQ Number 477419 Material Technical Specifications Category Slotted Nuts Dimensions The following suppliers (machine shops, fabricators, casters, molders, 3D printing, CNC machining, etc.) provide manufacturing services for the machine tool industry, automotive industry… For more information visit www.MFG.com. MFG.com analyzes all engineered parts and RFQs for improved manufacturability and to ensure quality and a quick quoting experience. Slotted Nuts: Slotted nuts, also called castle nuts, are hex nuts with a slightly reduced slotted cylindrical section on one end that contain linear grooves. Castle nuts are generally used in conjunction with a cotter pin to prevent loosening.