National Hardware #8 5/8-in x 1-3/4-in Stainless Interior/Exterior Coarse Thread Eye Bolt (2-Count) in the Specialty Bolts department at

Hillman Sqaure Drive Trim Screw, Extra Small Head, 7 x 2-1/4-in

GRK Fasteners

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Hard-to-Find Fastener 014973454838 454838 Fender

A coupling nut is a long nut tapped from each side to meet in the middle - rather than all the way through in the same direction - used to connect two threaded rods end to end.

Hard-to-Find Fastener 014973403331 Coarse Rod Coupling Nuts, 5/16-18, Piece-20

Hard-to-Find Fastener 014973323110 323110 Tee Nut, 8

Nuthouse Hardware/ 1/4-20 Tpi 20 X 1.57 Ijoint Connector

What size of screws need to be used for 2'x8' joist hangers? - Quora

Hardware PARKROSE HARDWARE

A legacy of longevity, service and sales support. Since 1901, National Hardware has been alongside the edge of American history, carving its own path built on a foundation of pride, pristine craftsmanship and a gentlemen’s agreement to start selling wagons.

National Hardware #8 5/8-in x 1-3/4-in Stainless Interior/Exterior Coarse Thread Eye Bolt (2-Count) Stainless Steel | N100-196

What size of screws are needed for 15mm by 34mm wood? - Quora