Metallics JW119SSV Washers 3/8 x 1-1/4 Fender SS (Jar 500)

The JW119SSV is a 3/8 inch fender washer with a 1-1/4 inch outside diameter, so it takes 3/8 inch bolts, lag screws, and threaded rod. The oversized OD spreads the load over a much larger bearing surface than a standard 3/8 flat washer, which is the point of a fender washer.

They are 18-8 stainless steel, the standard corrosion-resistant grade for exterior and damp-location work. That makes them suitable for outdoor strut, rooftop equipment supports, and wet areas where a plated steel washer would rust and streak. Pair them with stainless fasteners to avoid mixing metals.

Use the fender washer when the surface under the fastener is soft, oversized, or already drilled too big: sheet metal, drywall, plywood, panel boxes, or slotted strut where a regular 3/8 flat washer would pull through or dish the material. The 1-1/4 inch OD bridges the hole and spreads clamping load. If the hole is tight and the material is solid steel, a standard flat washer is the simpler choice.

Each jar holds 500 pieces of the 3/8 x 1-1/4 stainless fender washer, packed in a jar rather than a bag. Jar packaging keeps them from spilling on a van shelf or a gang box, which is why it is a common MRO and service-truck stocking format. Shipping weight on the jar is listed at 6.85 lbs.

Yes, on 3/8 inch rod, which is the common trapeze and hanger size. The wide 1-1/4 inch bearing face is what you want above a channel nut, a slotted strut, or a punched-angle bracket where the hole is larger than the rod. Being 18-8 stainless, they hold up in parking garages, rooftops, and mechanical rooms.

The jar measures 5.75 by 3.5 by 3.5 inches, which fits most parts-bin shelving and tool-bag pockets. Useful to know if you are standardizing a hardware wall or a stockroom bin layout across a facility.