Gibraltar SC-SBRA-TP 12" Cymbal Boom Rod with Swing Nut
Source Customized stainless steel wing nuts with bolts swing bolt with nut on m.alibaba.com
90185-16002-00 Swing Arm Lock Nut (72B) – Cascade Innovations
Item # BET4483SL002, ASME Swing Bolt with 4472SL (4.50"), Pin, Roll Pin & Wing Nut Assy. On Tank Truck Service & Sales, Inc.
Eastern Jungle Gym 2 Heavy Duty Swing Hangers for Wooden Swing Set Playground Porch Indoor Outdoor Seat with Nut & Bolt Mounting Hardware and Snap Hooks - Walmart.com