Metallics JBLS33G Bolts 1/2 X 5 Hx Lag Blt Galv (Jar 10)

Yes. The JBLS33G is a galvanized steel lag bolt and Metallics calls it out for use in corrosive environments, which covers exterior framing, damp mechanical rooms, and wet-location strut or conduit support. For contact with ACQ treated lumber or coastal salt exposure, stainless is the more conservative choice.

The JBLS33G is low carbon steel per AISI 1006-1022 with a 60,000 psi minimum tensile strength and a Rockwell B70-B100 hardness. That is standard commercial lag bolt grade, suitable for strut, hanger, and equipment attachment into solid wood members. It is not a high strength Grade 5 or Grade 8 bolt, so for engineered connections that call out a specific bolt grade, check the drawing.

Metallics flags the JBLS33G as both ARRA compliant and Buy American compliant, which is what a government or institutional procurement office needs on file. Note the bolts are manufactured in China, so if your specification requires domestic melt and manufacture rather than trade-agreement compliance, verify against the exact clause in your contract.

The Metallics JBLS33G lag bolt has a measured outside (thread) diameter of 0.482 to 0.515 inch and a shank sized for a nominal 1/2 inch lag. Drill your pilot to the unthreaded shank size, not the thread crest, so the gimlet point can cut its own threads in the wood. In softwood you can run smaller; in dense hardwood or treated lumber stay closer to the shank diameter to avoid snapping the bolt.

Each jar holds 10 of the 1/2 x 5 inch galvanized hex lag bolts. Metallics sets an order minimum of 25 count on this item, so plan your purchase in multiples that satisfy that minimum rather than buying a single jar.

No. The JBLS33G is a full-bodied lag bolt with spaced threads at 6 threads per inch and an unthreaded shank below the head, which is what lets the bolt clamp the piece you are fastening down tight against the substrate. Across its 5 inch length, expect roughly the lower two thirds to carry thread.

No washers are packed with the JBLS33G jar, just the bolts. A flat washer under the hex head is good practice on wood so the head does not crush into the surface as you torque it down, and on galvanized work use a galvanized washer so you are not mixing coatings and setting up galvanic corrosion.

Yes. The 1/2 x 5 inch galvanized bolt is one item in the Metallics BLS and JBLS lag bolt series, and other sizes and pack quantities are available by request. The series also runs in plain and stainless versions, so if your exposure calls for 18-8 stainless rather than galvanized, ask for that instead of substituting a coating.