Description:

Lag screw bolts are used in plof standard wood screws whenever the mounting surfmust bear a heavy load. They are often used on heavy lumber. Due to the thicker diameter, a pre-drilled hole is required. The hex head allows for it to be tightened with more torque than can be used on a phillips head screw. Model # 9055211 Features: Diameter & Length: 1/4 inch X 3-1/2 inch Wood screw with a 6-sided hex bolt head. Lag screws do not accept nuts. Much thicker than standard wood screws Used in applications where standard wood screws cannot support the load, excellent for deck building where you cannot use nuts Requires hole to be drilled and installs using wrench or socket tool (Wrench Size: 7/16 in) Specifications Met: ASME B18. 2. 1 Thread Type: DEEP Item Dimensions: 4" L x 4" W x 4" H.