Metallics BLS59PLB Bolts 3/8 x 8 Hx Lag Blt Pln-St (Box 125)

The BLS59PLB measures 0.360 to 0.388 inch across the thread outside diameter, with a shank body in the 0.226 to 0.268 inch range, so the pilot hole is sized to the body rather than the threads. Drilling to roughly the unthreaded body diameter in solid wood lets the 7 threads per inch cut and hold without splitting the member.

No. The BLS59PLB is plain steel with a zinc finish and is specified for use in wood in non-corrosive environments. For exterior, treated lumber, or wet locations, go to a hot-dip galvanized or stainless lag screw instead, since zinc plating alone will not hold up there.

Rated at 60,000 psi minimum tensile strength with a hardness of Rockwell B70 to B100, made from AISI 1006 to 1022 steel. That is the standard carbon-steel lag screw range used for anchoring strut, hangers, ledgers, and equipment into wood framing. It is a full-bodied bolt with spaced threads and a gimlet point, so it drives into wood under its own thread without a nut.

Both flags are marked compliant on the BLS59PLB, which is what a government, school, or healthcare procurement officer needs for federally funded work. Country of origin is listed as multiple, so if your specification requires a single documented origin, confirm the origin on the lot you receive.

These ship as a box of 125, and 125 count is the order minimum, so partial counts are not broken out. The full box weighs 24.54 lbs. Other sizes and quantities in the BLS and JBLS lag series are available by request if 8 inch length or that count does not suit the job.

No washers are supplied; the box contains the lag bolts only. A flat washer under the hex head is normal practice when lagging into wood so the head does not crush the fiber as it pulls up. Order washers separately to suit a 3/8 inch bolt.