Description
The Chem-Set undermount sink clip set is the mounting hardware for one sink position: a glue-on anchor, a Z-shape sink clip, a wingnut, and a washer, sold together under one SKU. Fabricators use it on natural stone, quartz, and solid surface countertops.
The anchor is bonded to the underside of the countertop with epoxy or acrylic adhesive, so the stone is not drilled. The clip, washer, and wingnut then hold the sink against it. Adhesive is not included. Need a different clip style? See the Chem-Set metal undermount sink clips.
What Is in Each Set
| Part | Description | Qty |
|---|---|---|
| Glue-on anchor | Chem-Set M1B38, 38 mm round base, 1/4-20 thread, 0.75 in post length (19.1 mm) | 1 |
| Sink clip | Z-shape stamped steel undermount sink clip | 1 |
| Wingnut | 1/4-20 thread, stamped | 1 |
| Washer | 1/4-20 thread | 1 |
Key Product Details
| Property | Value |
|---|---|
| SKU | CCH-UMFS |
| Product Type | Undermount sink clip set with glue-on anchor |
| Package | Sold by the set |
| Thread Size | 1/4-20 on the anchor post, wingnut, and washer |
| Anchor Base | 38 mm round base (1.50 in) |
| Adhesive | Not included. Use Chem-Set 633 5 Minute Epoxy Gel or Chem-Set 605 Quick Set Acrylic Adhesive |
| Countertops | Natural stone, quartz, solid surface (match the adhesive to the material) |
| Quantity Pricing | Price steps down at 500 and 2,000 sets |
Performance in Production
- One SKU covers the anchor, clip, wingnut, and washer, so a shop stocks and quotes one part number for the full mounting hardware.
- The anchor, wingnut, and washer all use 1/4-20 thread, so the hardware in the set matches.
- The M1B38 has a 38 mm round base for general use, bonded to the underside of the countertop.
- Bonding the anchor means the stone is not drilled for the mounting point.
- The Z-shape is the standard clip in the Chem-Set family, for standard undermount installs.
- The price steps down at 500 and 2,000 sets for shops that mount sinks every day.
Common Applications
- Undermount kitchen sinks in granite and natural stone countertops
- Undermount sinks in engineered quartz countertops
- Undermount sinks in solid surface countertops
- Bathroom vanity undermount sinks
- Residential and commercial countertop fabrication
- Shops that want the full mounting hardware under one part number
Available Sizes
| SKU | Package |
|---|---|
| CCH-UMFS | 1 set: 1 M1B38 anchor, 1 Z-shape clip, 1 wingnut, 1 washer |
Related Products
- Chem-Set 633 5 Minute Epoxy Gel: bonds the anchor to natural stone and concrete
- Chem-Set 605 Quick Set Acrylic Adhesive: bonds the anchor to solid surface and engineered quartz
- Chem-Set metal undermount sink clips: Z, C, Heavy Duty, Short Rise, and High Rise clip styles
- Chem-Set M1B38 glue-on sink anchor: the anchor in this set, sold separately
- Specialinsert Keep-Nut press-in anchors: a mechanical option for stone, granite, composites, and HPL panels
How the Sink Clip Set Mounts the Sink
A glue-on sink clip set holds an undermount sink by bonding an anchor to the underside of the countertop and clamping the sink with a clip on the anchor post. The steps below follow the photos.
- Clean the area. Clean the bonding area on the underside of the countertop.
- Apply adhesive. Put the adhesive on the anchor base, matched to the material: Chem-Set 633 5 Minute Epoxy Gel for natural stone and concrete, or Chem-Set 605 Quick Set Acrylic Adhesive for solid surface and engineered quartz.
- Assemble and fixture. Set the anchor on the surface, then put the clip, washer, and wingnut on the post to fixture the anchor in place.
- Ready for use. Follow the adhesive’s directions before the sink goes on. Then set the sink and tighten the wingnuts so each clip holds the sink against the countertop.
The adhesive, the countertop material, and the number of anchor points set the holding strength, so match them to the sink. The Glue-On Undermount Sink Installation Guide (PDF) covers the full install. Call us on heavy sinks or unusual materials.
Frequently Asked Questions
What comes in the Chem-Set undermount sink clip set?
Each set has one M1B38 glue-on anchor, one Z-shape sink clip, one 1/4-20 wingnut, and one 1/4-20 washer. Sink clip set, sink mounting kit, and sink clip and anchor set all describe the same product.
Does the sink clip set include adhesive?
No, adhesive is sold separately. Use Chem-Set 633 5 Minute Epoxy Gel on natural stone and concrete, and Chem-Set 605 Quick Set Acrylic Adhesive on solid surface and engineered quartz.
Do I have to drill the countertop to use this set?
No. The anchor is bonded to the underside of the countertop, so the stone is not drilled for the mounting point.
What thread size is the anchor, wingnut, and washer?
All three are 1/4-20. The anchor post is 0.75 in long.
Is the anchor in this set the same as the M1B38?
Yes. The set includes one Chem-Set M1B38 glue-on anchor with a 1/4-20 thread and a 0.75 in post. The M1B38 is also sold separately.
Can I use a different clip style with the glue-on anchor?
Yes. All five Chem-Set clip styles work with glue-on anchors, and this set includes the Z-shape. The other styles are on the metal undermount sink clips page. Call (800) 220-1966 to match the clip to your anchor thread.
What countertops does the set work on?
It works on natural stone, quartz, and solid surface countertops. The adhesive you choose has to match the material.
Questions on fit for your undermount sink install? Call (800) 220-1966 or email [email protected].
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