Need a replacement bolt for your Hitachi power tool? This is a 2-pack of genuine Hitachi Nylock Hex Socket HD Bolts, part number 888-245 (M6 size). They're used in Hitachi NR83A series power tools, including models NR83A, NR83A2, NR83A2(S), NR83A3, NR83A3S, NR83A5, and NR83A5(S). The nylock feature helps keep the bolt secure with vibration. Made to Hitachi's specs, so you know it'll fit and work right. Always check your tool's diagram to confirm compatibility before ordering. Handy to have a couple spares in your toolbox—saves you time if a bolt strips or gets lost. Easy to install with a hex key. Keep your tool running smoothly with these OEM-quality parts. Sold as the bolts only (tools not included). A small part that makes a big difference for repairs and maintenance.