5/16-18 X 3" Carriage Bolts | Grade 8 Steel Zinc Yellow (450 / Pkg.) Screwbolt+ Thread / length: 4-40 UNC

Thread / length: 4-40 UNC thread

The 5/16-18 thread and 1-1/2 inch length make them a versatile choice for metal-to-metal

these metric machine screws measure M1

secure fit across compatible materials

Order now to ensure your next project has a dependable fastening solution with a classic slotted drive

5/16-18 X 3" Carriage Bolts | Grade 8 Steel Zinc Yellow (450 / Pkg.) Screwbolt+ Thread / length: 4-40 UNC5 16 18 X 3" Carriage Bolts in Grade 8 Steel Zinc Yellow. Carriage bolts feature a smooth, rounded head with a square neck underneath that pulls into the material to prevent the bolt from turning during installation, making them ideal for wood to wood and wood to metal connections. Domed head with square anti rotation neck Grade 8 Steel Zinc Yellow construction Coarse thread for use in wood and with nuts and washers Sold in bulk packs Specifications