I can get either regular metal bolts or in 1/2 inch by 2 and 1/2 by 4 and 1/2 by 6 inch
same sizes with 3/8 and 5/16 washers and nuts also

can get 304 ss bolts 1/2 by 2 1/2 by4
3/8 by 2 and 3/8 by4
5/16 by2 5/16and 4

above are Carriage Bolts can also get a variety of hex head bolts pm me for a size not listed I'll see what I can do

also sheet metal screws
can get allthread just let me know a size