Metallics SQW77G Washers 5/8 X 2-1/2 Square Galv (Box 50)

The SQW77G is sized for 5/8 inch bolts and rod, with a 2-1/2 inch square body. Pair it with 5/8-11 all-thread hanger rod, anchor bolts or strut bolting where you need to spread the load across a wider bearing surface than a round cut washer gives you.

A square plate washer spreads clamping load over a much larger footprint, so it is the one to reach for on wood framing, sheathing, or any soft or oversized-hole condition where a round washer would pull through or crush the material. The SQW77G gives a 2-1/2 inch square bearing face on a 5/8 fastener. If you are bolting steel to steel through a tight hole, a standard round flat washer is usually all you need.

They are galvanized steel, so they hold up in exterior, damp and unconditioned spaces far better than plain steel. For heavy chemical exposure or coastal splash zones, stainless is the better call.

Yes. Metallics lists the SQW77G for the electrical, plumbing, heating and air conditioning trades, and 5/8 is a common trapeze and heavy hanger rod size. Typical use is under the nut on 5/8 threaded rod at a wood structure or where the bolt hole is oversized.

They ship 50 to a box, packaged as a box rather than loose or bagged. The full box runs 11.07 lbs, which is worth knowing if you are staging material by hand up a lift or a ladder.