Description
The Keep-Nut® IM2S/P1.4-20/H6 insert is a press-in, self-anchoring threaded insert engineered for thin and solid materials such as natural stone, quartz, porcelain, solid surface, and composites. It installs cleanly without adhesives—simply drill, press, and fasten.
This 100-pack is ideal for production environments and CNC shops performing high-volume undermount sink installations, panel fastening, and furniture assembly. Each insert delivers superior pull-out resistance and a flush-mounted finish that maintains the integrity and appearance of decorative surfaces.
Key Features & Benefits
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Adhesive-Free Installation: No resins or curing time—drill and press in.
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Exceptional Holding Strength: Up to 650 lbs pull-out resistance in solid surface.
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Durable Stainless Steel Build: AISI 303/316L components for corrosion resistance.
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Flush, Hidden Mounting: Clean aesthetic with no visible hardware.
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Multi-Material Versatility: Works with stone, quartz, porcelain, and solid surface.
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Tested & Certified: Meets ASTM C1354 and ETA performance standards.
Technical Specifications
| Specification | Details |
|---|---|
| Thread Size | 1/4-20 UNC |
| Model | IM2S/P1.4-20/H6 |
| Insert Height | 6 mm |
| Recommended Hole | 11.8 mm |
| Material | Bush: AISI 303 SS
Crowns: AISI 316L SS Ring: PA6 Nylon |
| Pack Size | 100 Inserts |
| Drill Bits | CNC – CCH-KNBITCNC-11.8MM
Grinder – CCH-KNBITGRI-11.4MM Solid Surface – CCH-KNBITSS-11.8MM |
Average Pull-Out Strength (ASTM C1354)
| Material | Load (lbs) |
|---|---|
| Corian (10 mm) | 650 |
| Porcelain (12 mm) | 562 |
| Quartz (12 mm) | 540 |
| Granite (12 mm) | 530 |
| Marble (12 mm) | 495 |
*Based on the 2 Crown (IM2S) Keep-Nut
Common Applications
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Undermount Sink Mounting – Secure sinks to stone and solid surfaces.
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Countertop Anchoring – Fasten brackets, supports, and hardware.
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Furniture Assembly – Hidden, strong fastening in composite panels.
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Wall Cladding & Facades – Structural anchoring for ventilated panels.
Installation Overview
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Drill – Use the correct bit for your substrate (11.8 mm standard).
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Check Fit – Verify with a Go/No-Go Gauge (CCH-KNGAUGE).
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Insert Keep-Nut® – Press in using the Setting Tool (CCH-KNSET-1/4).
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Fasten Hardware – Attach bolts or threaded studs as required.
Recommended Tooling
| Tool | Description | Part # |
|---|---|---|
| Go/No-Go Gauge | Confirms hole diameter and depth | CCH-KNGAUGE |
| Setting Tool (1/4-20) | Safely presses Keep-Nut® into hole | CCH-KNSET-1/4 |
| Grinder Bit (11.5 mm, 5/8-11) | Manual drilling – all surfaces | FKN12X50EVO-UNC |
| CNC Bit (11.5 mm) | CNC drilling – all surfaces | FKN12X10EVO |
| CNC Bit (11.8 mm Blue) | Stone & Quartz | CCH-KNBITCNC-11.8MM |
| CNC Bit (11.8 mm White) | Porcelain & Ceramic | CCH-KNBITCNC-11.8-D |
| Grinder Bit (11.4 mm Blue) | Stone & Quartz | CCH-KNBITGRI-11.4MM |
| Grinder Bit (11.4 mm White) | Porcelain & Ceramic | CCH-KNBITGRI-11.4-D |
| Hand Drill Bit (11.8 mm) | Solid Surface & Plastics | CCH-KNBITSS-11.8MM |
Why Choose Keep-Nut®?
Developed and manufactured in Italy by Specialinsert®, the Keep-Nut® system uses elastic stainless-steel crowns that expand inside the substrate, creating a secure mechanical lock without adhesives or expansion anchors. The result is a clean, strong, and permanent fastening solution trusted across architectural, countertop, and furniture industries.
Packaging & Ordering Info
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100 inserts per pack
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Available in bulk quantities upon request
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Custom tooling kits and CNC packages available
For bulk pricing, OEM applications, or technical support, contact Chemical Concepts at [email protected] or call 800-220-1966.
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