Online Parts Store › Carriage Bolt, 3/8"-16 x 1-1/2" Image 1 of 1 Carriage Bolt, 3/8"-16 x 1-1/2" $35.90 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screws - Flat Head, #4 x 3/4" $13.73 Phillips Tapping Screw - Truss Head #10 x 3/4" $31.18 Phillips Tapping Screws - Flat Head, #6 x 3/8" $9.01 Phillips Tapping Screws - Oval Head, #12 x 1-1/2" $30.55 Phillips Tapping Screws - Flat Head, #14 x 1-3/4" $36.21