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I-FME-XM - Extension External hex FM Medium | SOS
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https://www.homedepot.com/p/Hillman-1-4-in-x-2-in-External-Hex-Full-Thread-Hex-Head-Bolts-10-Pack-45225/204794720
Hillman 1/4 in. x 2 in. External Hex Full Thread Hex-Head Bolts (10-Pack) 45225 - The Home Depot
Hex bolts are machine bolts that have been designed to adhere facing materials to prevent shear movement, specifically in wood to wood, wood to metal, or metal...
https://www.aspenfasteners.com/5-16-18-thk-17-64-a-f-1-2-hex-k-lock-keps-nuts-aisi-304-stainless-steel-18-8/
K Lock Keps Nuts 5/16"-18, THK=17/64", A/F=1/2" Hex Drive Free-spinning External Tooth Lock Washer...
Buy Online from Aspen Fasteners | Free Shipping | 5/16"-18, THK=17/64", A/F=1/2" K Lock Keps Nuts, Stainless Steel