Description
The Keep-Nut drill bit in 11.8mm is a manual diamond bit with a 5/8 inch-11 thread mount. It cuts clean anchor holes in natural stone and engineered quartz so the 11.8mm Keep-Nut threaded insert seats tight and carries the full rated pull-out load.
Why fabricators run this Keep-Nut drill bit
- 11.8mm cut diameter sized to the 11.8mm Keep-Nut anchor specification, giving interference fit and rated pull-out strength.
- Diamond cutting face works granite, marble, and engineered quartz without chipping the rim of the hole.
- 5/8 inch-11 thread mount fits standard core drill spindles and right-angle stone drills used in countertop shops.
- Non-coring profile clears chips while keeping the hole wall ready for adhesive bond against the anchor body.
- Manual format gives the operator direct feel on softer or thinner stone where powered coring runs too aggressive.
Stone fabricators and field installers run this bit to set the Keep-Nut panel anchoring system into countertops, backsplashes, vanity tops, and architectural stone work. The bit and anchor stay predictable from one material to the next, so crews move job to job without swapping tools for each stone.
Common applications for the Keep-Nut drill bit
- Drilling 11.8mm anchor holes for Keep-Nut threaded inserts in granite, quartz, and engineered stone
- Sink and faucet hardware mounting where a stud anchor is needed in stone
- Panel-to-stone attachment using the Keep-Nut insert as the load transfer point
- Stone cladding, wall panel, and fixture mounts on countertops and vanities
Compatible materials
- Granite, marble, and other natural stone
- Quartz and engineered stone (Caesarstone, Silestone, Cambria, and similar)
- Porcelain and ceramic slab with test cuts first
Keep-Nut drill bit specifications
| Property | Value |
|---|---|
| Cut diameter | 11.8 mm |
| Thread mount | 5/8 inch-11 |
| Format | Manual diamond drill bit |
| Profile | Non-coring |
| Compatible anchor | 11.8mm Keep-Nut self-anchoring insert |
| Substrate | Natural stone, engineered quartz, porcelain |
Ordering and support
Pair this bit with the right anchors and installation tools from the Keep-Nut threaded inserts category. For diamond tool grading and abrasive standards, the FEPA Federation of European Producers of Abrasives is the recognized industry body.
For help picking the right Keep-Nut anchor size and matching bit for the stone you are running, call (800) 220-1966 or email [email protected].
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