Online Parts Store › Carriage Bolt, 1/4"-20 x 2-1/2" Image 1 of 1 Carriage Bolt, 1/4"-20 x 2-1/2" $23.56 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screw - Truss Head #8 x 3/4" $17.19 Stainless Countersunk Finishing Washer, #6 $13.10 Phillips Tapping Screws - Flat Head, #6 x 3/8" $9.01 Nylon Insert Locknut - Stainless 3/4-10 $53.60 Lock Washer, M5 $10.83