Metallics JBLW8 Washers No.8 Split Lock Sbr (Jar 100)

The JBLW8 is a No. 8 split lock washer, so it seats under the head of a No. 8 machine screw or bolt. If you're fastening a different gauge, you need the matching size in the series rather than this one.

You can, but be deliberate about it. Silicon bronze against a steel fastener is a dissimilar metal pairing, and in a wet or outdoor location that combination will corrode faster than matched metals. Where the assembly is bronze or brass, or exposed to moisture, the bronze washer is the reason to buy this one; for dry interior work with plated steel screws, a matching plated steel lock washer keeps the metals consistent.

One jar holds 100 pieces. The jar pack is the practical format for a service van or a shop bin, since you're pulling a handful at a time rather than a full box.

A split lock washer is a single coil with a gap that flattens as the screw is torqued down, putting spring tension back against the head so vibration doesn't back the fastener out. On the JBLW8 that's a No. 8 size in silicon bronze, which is why it turns up on electrical, plumbing, and HVAC work where terminals and straps see movement or thermal cycling.

The jar comes in at 0.11 lbs and measures 3 x 2.15 x 3 inches, so it takes up about the footprint of a small parts cup on a van shelf and adds nothing meaningful to a shipment.