Metallics JW111SS Washers 3/16 X 1-1/4 Fender SS (Jar 100)

The JW111SS is a 3/16 inch fender washer, so it drops over a 3/16 inch bolt or screw shank. The 1-1/4 inch outside diameter is what makes it a fender washer rather than a flat washer: roughly six and a half times the hole size, spreading the clamp load well past the fastener head.

Stainless steel throughout, not zinc-plated carbon. That matters if the washers are going outdoors, in a damp mechanical room, on rooftop equipment, or anywhere a plated washer would bleed rust down a finished surface. Pair them with stainless fasteners so you are not setting up a dissimilar-metal problem at the joint.

No. The JW111SS has a 3/16 inch inside diameter, which is under the 0.250 inch shank of a 1/4-20 bolt, so it will not pass over it. For 1/4 inch hardware you need a 1/4 inch fender washer. Going the other way is fine: a 3/16 washer will sit over a #8 or #10 screw with clearance, though the extra slop means the head still needs to bear fully on the washer face.

A standard flat washer is sized close to the bolt head, so on thin sheet metal, gypsum, or a slightly oversized hole the fastener can pull straight through. The JW111SS uses a large 1-1/4 inch outside diameter on a 3/16 inch hole to put far more bearing surface against the material. That is the reason to reach for it: oversized or worn holes, thin-gauge metal, and soft substrates.

100 pieces per jar. It ships as a jar rather than a loose bag, which is the format most electricians and mechanical crews want on a van or a service cart, since the lid keeps the count contained between jobs. The full jar weighs 1.41 lbs.

Order by Metallics MPN JW111SS. That is the single designation for the 3/16 by 1-1/4 stainless fender washer in the 100-piece jar, so repeat orders and multiple crews land on the same item with no size or material drift.