You might also be interested in these self locking nut and bolts.
1080 Pcs Phillips Pan Head Screws and Nuts Washers Set, M3/M4/M5/M6 Flat Cross Head Self Tapping Screws Bolts Nuts Lock Flat Washers Assortment Kit for DIY Fastening Accessories
Premium Material: Our pan head screws and bolt and nuts and washeres sets are made of excellent carbon steel material with smooth edges, which are sturdy, corrosion and rust resistant, not broken and durable for long time use
Mbsomnus 15 Pcs Hex Head Bolts and Nuts Set M6x16 mm Lock Nuts 304 Stainless Steel Bolts DIN 933 Machine Screws with Nylon Nut Flat Lock Washers for Furniture Machinery Car Bike Ship 3D Printing
Exquisite material: self-locking nuts are made of high quality stainless steel with smooth surface and edges without burrs, not easy to deform or break, corrosion-resistant, rust-proof, and can maintain good performance and durability in harsh environments.
