At Action Sports/SnowboardMaterials.com we stock top quality Stainless Steel binding insterts that feature metric 6mm x 1mm thread pitch as used by 99% of all snowboard bindings, 304 Stainless alloy, and plastic resin cap to keep epoxy out. Our new round base 6mm inserts are the same top quality but at a slightly lower price (we purchased them from a factory bankruptcy).
Drill barrel hole 3/8" diameter, countersink for base at 3/4" diameter.