Belleville Washer This RFQ was sourced on www.MFG.com in CANADA for Belleville Washers Buyer is in serach of a belleville washer. 1.25" OD. Material is inconel 718 HT. Buyer Information Industry Measuring and Control Instruments City/Region Edmonton, Alberta Country CANADA RFQ RFQ Number 509545 Material Technical Specifications Category Belleville 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. Belleville Washers: Belleville washers, or cupped spring washers, are washers with a slight conical shape which gives the washer a spring functionality. Belleville washers are typically used as springs to apply pre-load to bolted joints.