Metallics W122M Washers 1/4 x 2 Fender St-zn (Box 1000)

The W122M is a 1/4 inch fender washer, so it takes a 1/4-20 bolt or a #14 screw shank. The 2 inch outside diameter gives you a large bearing surface, which is the point of a fender washer: it spreads the load over sheet metal, drywall, soft sheathing, or an oversized or slotted hole that a standard flat washer would pull straight through.

They are zinc plated steel. Zinc plating handles indoor, damp, and sheltered exterior work and resists ordinary rust and handling corrosion. For direct weather exposure over years, salt air, or treated lumber contact, hot dip galvanized or stainless is the better call, since plated zinc is a thin sacrificial coating.

One box holds 1,000 washers, and it ships as a single box rather than loose or bagged counts. At 54.3 lbs per box, plan on one person handling it. If you only need a handful for a service call, a 1,000 count box is a lot of washer, it suits shops stocking a fastener bin or a crew running repetitive strut, hanger, or panel work.

Yes, that is a common use. A 2 inch OD washer under a 1/4 inch bolt head spans slotted strut channel, oversized knockouts, and sheet metal panels where the bolt head alone would deform or pass through. It is also used behind 1/4 inch anchors in gypsum or soft board to keep the fastener from sinking. The washer is a bearing surface only, it adds no pull-out rating by itself.

Both are flat, but a fender washer has a much larger outside diameter relative to the hole. The W122M pairs a 1/4 inch hole with a 2 inch OD, where a standard 1/4 inch flat washer is only around 5/8 to 3/4 inch across. Use the fender when the hole is oversized, slotted, or in thin or soft material. Use a standard flat washer when you just want to protect the surface under a bolt head on solid steel or wood, it is lower profile and does not look oversized.

The box weighs 54.3 lbs and measures 9 x 9 x 6.13 inches. Worth knowing before you order several for a jobsite drop, since the weight adds up fast in a stack and a pallet of them is heavy for the footprint.

Order Metallics part W122M. That is the manufacturer number for the 1/4 x 2 zinc plated steel fender washer in a 1,000 count box, and it is the only configuration this part number covers, so there is no finish or size option to specify.