Online Parts Store › Carriage Bolt, 3/8"-16 x 2-1/2" Image 1 of 1 Carriage Bolt, 3/8"-16 x 2-1/2" $23.43 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Flat Washer, #10, .050" Thick, OD 7/16 $13.35 Phillips Tapping Screws - Oval Head, #10 x 2-1/2" $29.85 Stainless Cotter Pin 3/32" x 1-1/4" $54.48 Nylon Insert Locknut - Stainless 3/4-10 $53.60 Phillips Tapping Screws - Flat Head, #14 x 2-1/2" $57.69