Filabot Bolt This RFQ was sourced on www.MFG.com in USA for Micro-Drilling Buyer is looking to have a 0.250" hole to be drilled in a steel bolt. This is a modification of a bolt. Buyer Information Industry Machinery and Tools City/Region Chicago, Illinois Country USA RFQ RFQ Number 665813 Material Alloy Steel Technical Specifications Category Micro-Drilling 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. Micro-Drilling: Micro-Drilling is the process of drilling very small holes with high precision. Some services are capable of drilling holes that could pierce a human hair.