SIERRA Sink Mount Kit - Pack of 4

SIERRA Undermount Sink Mount Kit

The SIERRA Sink Mount Kit is a complete four-point anchoring set for securing undermount sinks to stone, quartz, and solid surface countertops - and it works just as well for anchoring panels. Everything bonds and mounts from the underside, so the countertop face stays clean and the whole assembly ships flat and installs fast on site.

Bond the four studs to the underside of the countertop with a fast-set anchoring adhesive, seat the sink, then lock it up tight with the clip, washer, and wing nut at each point. No visible hardware, no drilling through the slab.

Each kit includes:

4 × Sink clips
4 × ¼-20 × 1" stud fasteners (confirm thread/length against actual product)
4 × Flat washers
4 × Wing nuts

Why fabricators reach for it:

Complete 4-point kit - every piece needed to hang one sink, in one bag
Clean, hidden mount with no hardware showing on the finished top
Ships and stores flat; quick assembly at the job site
Works for undermount sinks and general panel anchoring alike
Consistent, repeatable install your crew can do the same way every time

You'll also need: a bonding adhesive to fix the studs to the substrate.