Description 1. Name: carriage bolt 2. Model: carriage bolt a307/ gr.2/ gr.5 3. Material: q235 4. Packing: small box, carton, bulk cartons/pallet and gunny bag 5. Origin: ningbo 6. Trademark: sd Features 1. Material: q235 2. Style: mushroom head 3. Tread type: half/full/unf/unc 4. Surface: blue zinc-plated Specification 1. Model: carriage bolt a307/ gr.2/ gr.5 2. Diameter: m4, m5, m6, m8, m10, m12, m16, m18, m20, m24 and m27 (3/16-, 1/4-, 5/16-, 3/8-, 1/2-, 5/8- and 3/4-inch) 3. Length: 30 to 250mm 4. Standard: ansi
