Metallics JWW88 Washers 1-1/4 USS Flat St-zn (Jar 25)

The JWW88 is a 1-1/4 inch USS flat washer, so it is sized for 1-1/4 inch diameter bolts, rods, or anchors. USS pattern means the larger outside diameter and bigger bore of the two common flat washer patterns, which spreads load over a wider bearing area than an SAE washer of the same nominal size. If you are torquing against wood, sheet steel, or strut, that wider footprint is usually what you want.

The JWW88 is zinc plated steel. Zinc plating handles indoor and protected-damp use, mechanical rooms, and general electrical rough-in fine, but it is not stainless. For continuous exterior exposure, wet locations, or coastal and corrosive atmospheres, step up to a hot dip galvanized or stainless washer instead.

For 1-1/4 inch rod, USS, which is what the Metallics JWW88 is, gives the broader bearing surface and is the normal choice for structural attachment, strut, channel, and anchoring into softer material. SAE washers are thinner with a smaller outside diameter and are used where the washer has to sit inside a tight counterbore or against a small machined face. If a drawing just calls for a flat washer on 1-1/4 rod, USS is the default.

Order Metallics JWW88. That single part number covers the 1-1/4 inch USS flat washer in zinc plated steel, supplied 25 to a jar. There are no finish or size options to specify.

Twenty-five washers per jar. The jar pack is the shop-stock format, which keeps the 1-1/4 inch size separated from the smaller washers on a service truck or in a bin system rather than loose in a bulk box.

Yes, the JWW88 is built to the ANSI dimensional pattern for a 1-1/4 USS flat washer, so it interchanges with other ANSI-pattern 1-1/4 USS washers already on the job. Country of origin is listed as multiple sources.