1/4-20 X 3-1/2 Flat Head Machine Screws Slotted This RFQ was sourced on www.MFG.com in USA for Machine Screws Buyer is in search of 1/4-20 x 3-1/2" Flat Head Machine Screws Slotted. SS 18-8. Buyer Information Industry Machinery and Tools City/Region Downingtown, Pennsylvania Country USA RFQ RFQ Number 425004 Material Laiton Technical Specifications Category Machine Screws Dimensions Are you looking for suppliers (machine shops, fabricators, casters, molders, 3D printing, CNC machining, etc.) to provide manufacturing services for machine tool industry, automotive industry? For more information visit MFG.com. MFG.com performs a 5-point inspection on all engineered parts and RFQs to ensure quality and enhance your online quoting experience Machine Screws: Machine screws are general purpose, slotted or hexagonal-headed screws with a standardized thread used to fasten parts together.