Steel Lag Screw, Plain Finish, Hex Head, Meets ASME B18.2.1/ASTM A307, 4" Length, Partially Threaded, 3/8"-7 Threads (Pack of 25)

The steel lag screw with plain finish has a hex head and meets American Society of Mechanical Engineers ASME B18.2.1 and American Society for Testing and Materials ASTM A307 specifications. Steel is often used in applications where strength is the primary consideration. The hex head has six flat sides that a wrench can grip to turn the screw from the side, enabling use when there is no space above the head for a driver.Lag screws, also called lag bolts, are hex-headed threaded fasteners commonly used for wood-fastening applications where load bearing is a factor. Usually longer than wood screws, lag screws are inserted into a drilled hole and secured with a nut.

• Steel is often used in applications where strength is the primary consideration
• Plain surface has no finish or coating
• Hex head has six flat sides that a wrench can grip from the side, enabling use when there is no space above for a driver
• Meets ASME B18.2.1 and ASTM A307 specifications