Stainless 18 or 316, UNC or UNF available like 3/16-24,1/4-20,1/4-28,5/16-18, 5/16-24

Wood to wood, wood to metal, and metal to metal are all secured with carriage bolts. Stainless steel 18-8 or 316, Round head, Square neck, 1/4-20 or 5/16-18

Wood to wood, wood to metal, and metal to metal are all secured with carriage bolts. Stainless steel 18-8 or 316, Round head, Square neck,3/8-16 or 1/2-13

Austenitic Stainless 18-8 or 316, Square drive, Pan Head, Tek Point, #8 / #10. Use for soft or thinner material like aluminum.

Martensite Stainless Steel 410, Square drive, Pan Head, Tek Point, #8 or #10.  Not for use with aluminum.

Austenitic Stainless Steel 18-8 or 316 , Torx(Star) drive, Pan Head, Tek Point, #8, #10.  Use for soft or thinner material like aluminum.

Martensite Stainless Steel 410, Torx / Star drive, Pan Head, Tek Point, #8 or #10. Strong, wear resistant, and mildly chemical resistant. Not for use with aluminum.

Stainless 316(A4), Bugle Head with 4 Ribs, Hex Drive, Type 17 Cutting Point, 14G,Typically Used To Fasten Metal Roofing Or Siding Panels Directly To Wood.