Description
The KEEP-NUT™ Starter Kit by Specialinsert® is the ultimate all-in-one solution for fabricators looking to simplify undermount sink installations. Each kit provides everything you need—inserts, hardware, setting tools, depth gauge, and a material-specific drill bit—so you can start installing KEEP-NUT anchors right away.
Whether you’re cutting with a CNC router, manual grinder/polisher, or hand drilling solid surface, each kit is tailored with the correct tooling for that setup. No adhesives, no curing time—just a fast, precise, mechanical anchoring system that’s recommended by Wilsonart® and trusted by fabricators worldwide.
Why Choose KEEP-NUT™
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Complete System: Every kit includes the exact components needed for professional undermount sink installation.
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Fast & Clean: Eliminates the mess of adhesives and long cure times.
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Reliable Strength: Each insert supports up to 562 lbs in stone or solid surface.
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Universal Compatibility: Works with granite, marble, quartz, solid surface, porcelain, sintered stone, HPL, glass, and more.
Available Kit Configurations
KEEP-NUT™ Starter Kits are available in 100-piece and 500-piece sizes, with three setup options depending on your fabrication method:
1. CNC Router Kit (11.8mm 1/2 GAS Bit)
Perfect for high-volume shops using CNC equipment.
Includes:
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100 or 500 KEEP-NUT™ Inserts (1/4-20 thread)
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100 or 500 1-1/4″ Allen Posts
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100 or 500 Wing Nuts
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100 or 500 “Z” Shaped Sink Clips
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(1) CNC Router Drill Bit (11.8mm 1/2 GAS connection)
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(1) Go/No-Go Depth Gauge
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(1) Setting Tool
2. Manual Grinder/Polisher Kit (11.4mm 5/8-11 Bit)
Ideal for on-site or manual installations using handheld polishing equipment.
For best results: Pair with the KDM115 Keep-Nut Manual Drilling Machine
Includes:
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100 or 500 KEEP-NUT™ Inserts (1/4-20 thread)
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100 or 500 1-1/4″ Allen Posts
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100 or 500 Wing Nuts
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100 or 500 “Z” Shaped Sink Clips
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(1) Manual Grinder Drill Bit (11.4mm 5/8-11 threaded arbor)
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(1) Go/No-Go Depth Gauge
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(1) Setting Tool
3. Solid Surface Hand Drill Kit (11.8mm Hand Drill Bit)
Tailored for solid surface fabricators using hand drills.
Includes:
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100 or 500 KEEP-NUT™ Inserts (1/4-20 thread)
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100 or 500 1-1/4″ Allen Posts
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100 or 500 Wing Nuts
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100 or 500 “Z” Shaped Sink Clips
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(1) Hand Drill Bit for Solid Surface (11.8mm shank)
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(1) Go/No-Go Depth Gauge
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(1) Setting Tool
Technical Specifications
| Property | Specification |
|---|---|
| Thread Size | 1/4-20 UNC |
| Load Capacity | Up to 562 lbs per anchor (depending on surface) |
| Hole Diameter | 11.4–11.8 mm (depending on bit type) |
| Insert Material | Stainless Steel (AISI 316) |
| Installation Method | Press-in mechanical anchoring |
| Recommended Materials | Granite, quartz, marble, solid surface, porcelain, sintered stone, HPL, glass, fiber cement |
| Origin | Made in Italy by Specialinsert® |
Packaging & Ordering Information
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100 pc Starter Kit: Ideal for small shops or first-time users
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500 pc Starter Kit: Best for high-volume fabrication or production work
Replacement parts and accessories available separately: KEEP-NUT™ inserts, drill bits, and setting tools.
Applications
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Undermount sink installation (stone, quartz, solid surface)
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Countertop fabrication
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Commercial kitchens and bathrooms
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Vanities and architectural panel installations
Get everything you need to start installing KEEP-NUT™ anchors today.
Order your Starter Kit from Chemical Concepts—your trusted source for Specialinsert® fastening systems and countertop fabrication solutions.
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