3/8 Lock Washer This RFQ was sourced on www.MFG.com in USA for Lock Washers Buyer is in search of 3/8" Lock Washers. SS 18-8. Buyer Information Industry Machinery and Tools City/Region Downingtown, Pennsylvania Country USA RFQ RFQ Number 425001 Material Laiton Technical Specifications Category Lock Washers Dimensions Get quotes online for manufacturing services at MFG.com from machine shops, fabricators, job shops and contract manufacturers. MFG.com connects buyers and suppliers when the buyer has a need and the supplier has the right expertise and capacity. MFG.com analyzes all engineered parts and RFQs for improved manufacturability and to ensure quality and a quick quoting experience. Lock Washers: Lock washers are washers that are designed to prevent loosening of a nut after it has been tightened. They generally have sharp edges that bite into the fastened surface to prevent unwanted rotation due to vibration or other mechanical forces.