Hardware: split-ring lock washer, 5/8-inch (pack of 100) - BuzzerSystems
Atom Toe Stop Split Ring Washer
Lock Washer Split Ring 18-8 Stainless Steel - 1cm (.377 ID x .680 OD x .078 Thick) Qty-100 by Raw Products - Shop Online for Homeware in the United States
Washer GB/T93 8, M8 split ring lock washer - GXI Parts & Service
Wkooa M15 E ring Split washers DIN6799 300pcs/lot|lots lots toy trains|lot tieslot charm - AliExpress
7/8 PLATED LOCK WASHER, FASTENER
Stainless Steel Lock Washers High Collar Split Ring - Inch Sizes #2 to 1 | eBay