Metallics BLS588G Bolts 5/8 x 8 Hx Lag Blt Galv (Box 50)

Yes. The BLS588G is a galvanized steel lag bolt made for corrosive environments, so exterior framing, pole and standoff work, and damp locations are within its intended use. The coating is the only corrosion protection, so avoid cutting or grinding the shank.

It is flagged compliant for both Buy American and ARRA, which is what institutional and public-works procurement normally needs on the fastener line. Country of origin is listed as multiple, so if your spec requires a single named origin, state that on the purchase order.

Minimum tensile strength is 60,000 psi, with hardness in the Rockwell B70 to B100 range, from low carbon steel in the AISI 1006 to 1022 range. That is standard commercial lag bolt grade, not a heat-treated high-strength bolt, so if a drawing calls for a specific SAE grade or a structural bolt, this is not the substitute.

Sold as a box of 50 pieces, and 50 is the order minimum, so it does not break into singles. If you need a different count or a different diameter and length, Metallics offers other sizes and quantities in the BLS and JBLS lag bolt series by request.

It is a hex head bolt, so it drives with a socket or wrench, not a screwdriver or bit. On a 5/8 inch lag that is typically a 15/16 inch hex across the flats per the ASME B18.2.1 head dimensions the bolt is built to. An impact wrench with a pilot hole is the normal install for a bolt this size.

Yes, at this diameter pre-drilling is required. It is a full-bodied bolt with spaced threads and a gimlet point, so the point starts the hole but the unthreaded shank needs a clearance hole through the member being fastened and a smaller lead hole in the receiving timber. Driving a 5/8 inch lag dry into solid wood will split the stock or snap the head.

Galvanized is the finish you want in contact with treated lumber and in corrosive exposure generally, which is what the BLS588G is built for. Keep the fasteners consistent though: pairing galvanized lags with bare steel plates or washers in a wet location sets up galvanic corrosion, so order matching galvanized washers for the job.

No. The box of 50 contains lag bolts only. A lag threads into wood and takes no nut, but most installs call for a flat washer under the hex head to keep it from crushing into the member, and those are ordered separately in a matching galvanized finish.

Yes, BLS588G is the Metallics manufacturer part number for the 5/8 x 8 galvanized hex lag bolt in the BLS and JBLS series, supplied 50 to a box. The BLS prefix is the galvanized lag line; order by that number to avoid pulling a different diameter or length from the same family.

A box of 50 weighs 30.54 lbs, with carton dimensions of 9 x 9 x 6.13 inches. That is a one-hand carton but a heavy one, worth knowing if you are staging multiple boxes on a lift or a roof.