Metallics JSWN2 Washers 1/4 Flat Ny (Jar 100)

Nylon. The JSWN2 is a 1/4 inch flat washer molded in nylon, not plated steel, so it won't rust and it electrically insulates the bolt head or nut from the surface it bears on. That's why it shows up on panel and enclosure work where you want to avoid metal-to-metal contact or protect a painted or soft finish.

They're sized for 1/4 inch fasteners, to SAE dimensions. SAE flat washers have a smaller outside diameter and a tighter bore than USS washers of the same nominal size, so if your drawing or spec calls for a 1/4 inch USS washer with a wider bearing face, this is not the one.

It depends on the load. A nylon washer like the JSWN2 spreads light clamping load, insulates, and protects finishes, but it will compress and creep under high torque where a hardened steel washer would not. For structural or high-torque bolted connections, use steel. For device mounting, enclosure covers, sign and fixture hardware, and anywhere you want to break a metal path or avoid marring, nylon is the right call.

100 washers per jar, and the jar is the pack type, so you're buying it as a sealed container rather than loose count. Total shipping weight is 0.9 lbs. For MRO cribs and service vans that's a convenient standing item, since the jar keeps the count contained on a shelf or in a bin drawer.

JSWN2 is the Metallics manufacturer part number, and it's the only model on the item, so there's nothing else to specify when ordering, no finish or size option to pick. Order by JSWN2 and you get the 1/4 inch SAE nylon flat washer in the 100-count jar.

The jar measures 3 x 3 x 2.15 inches, so it drops into a standard small parts bin or tote without repackaging. Useful if you're standardizing fastener storage across a shop or a fleet of trucks.

Country of origin is listed as multiple, so the washers can be sourced from more than one country depending on production run. If your project has a domestic-sourcing requirement on fasteners, that's worth settling before you specify this item.