UNPARALLELED LTD is one of the leading manufacturers and suppliers of stainless steel threaded inserts in China. With abundant experience, we warmly welcome you to buy advanced stainless steel threaded inserts made in China here from our factory. We also accept custom orders.
A precision granite structure is valued for stability, flatness, vibration resistance, and long-term dimensional performance. Yet a granite base also needs practical interfaces: places to secure rails, brackets, covers, sensors, air-bearing assemblies, fixtures, and metrology hardware.
That is the role of a threaded insert for granite.
UNPARALLELED® precision granite threaded inserts provide durable internal threads inside granite machine bases, granite surface plates, precision ceramic components, mineral casting structures, and UHPC precision assemblies. Each insert creates a controlled fastening point without asking the stone itself to carry a machined thread.
For high-accuracy equipment, that distinction matters. A properly specified and installed granite threaded insert helps designers attach functional hardware while preserving the structural advantages of the granite datum.
The threaded inserts shown are cylindrical, precision-machined metal bushings with internal metric threads and a grooved external profile. The external grooves are designed to improve mechanical engagement with the bonding compound during installation. Once bonded into a prepared hole, the insert provides a reusable threaded connection for equipment assembly and service.
In practical terms, this gives machine builders a stable way to mount components on non-metal structures.
- Granite air-bearing structures and precision guideway assemblies
- Customized metrology fixtures, brackets, covers, cable-management hardware, and sensor supports
| M2–M36; other sizes subject to drawing review | |
| Stainless steel 303 / 304; aluminum; customized materials available | |
| Precision drilled hole with epoxy-resin bonding | |
| Flush installation can be controlled to approximately 0.01–0.025 mm where applicable | |
| Thread gauge check, position inspection, visual inspection, torque or pull-resistance testing as specified | |
Actual pull-out resistance, torque capacity, positional tolerance, adhesive system, and curing conditions depend on the insert size, granite grade, hole geometry, bond-line design, loading direction, and operating environment. These values should be agreed during engineering review rather than assumed from a general catalogue table.
A threaded insert is a small component, but it can become a critical interface in a large precision assembly. When a guide rail, cover plate, optical bracket, or cable support is mounted to a granite component, repeatable fastening matters.
- Reliable threaded interface: Enables bolted assembly on granite and other non-metal precision materials
- Precision-oriented installation: Hole position and surface relationship can be managed as part of the granite component machining process
- Integration support: Inserts can be supplied as part of a complete granite base, granite component, air-bearing structure, or metrology fixture
UNPARALLELED® uses threaded inserts in precision granite, ceramic, mineral casting, and UHPC projects, with epoxy resin applied at the interface and traction-resistance testing available as part of the quality-control process.
Consider a granite base for an optical inspection system. The granite establishes the machine's stable reference structure. Linear-guide supports, protective covers, cable brackets, pneumatic hardware, and sensor mounts still need attachment points.
Instead of forcing the customer to design around loose clamps or secondary steel frames, threaded inserts can be positioned during component manufacturing. The engineering team reviews the hole layout, thread specification, mounting depth, edge distance, expected loads, and required surface relationship. Inserts are then installed with a controlled bonding process before final inspection or according to the agreed assembly sequence.
The user benefit is straightforward: less uncertainty during integration, cleaner assembly, and a serviceable fastening point for future maintenance.
They create reusable metal threads in granite machine bases, surface plates, granite components, ceramic parts, mineral casting structures, and UHPC precision components. Typical mounted items include rails, brackets, covers, fixture plates, sensors, and air-bearing hardware.
A precisely sized hole is drilled or machined into the granite. The hole and insert are cleaned, positioned with a suitable fixture, and bonded using an appropriate epoxy resin system. Cure time, bond thickness, alignment, and verification requirements should follow the approved process.
Yes. Depending on the design, inserts may be recessed below the surface, installed flush, or set to a specified height. UNPARALLELED® indicates that flush installation can be controlled within approximately 0.01–0.025 mm for applicable designs.
No, not unless the component has been specifically engineered, documented, and approved for lifting through dedicated lifting interfaces. Standard threaded inserts are intended for fastening accessories or machine components, not for hoisting a granite structure. Industry handling guidance similarly emphasizes pre-planned lifting and load-specific safety controls for stone products.
304 stainless steel is often selected where corrosion resistance and durable fastening are needed. Aluminum may be useful where lower mass is important. The final choice should account for load, environment, galvanic compatibility, operating temperature, and the fastener system used.
Need custom threaded inserts for granite components or a complete precision granite assembly with inserts pre-installed?
Send UNPARALLELED® your 2D/3D drawing, thread standard, quantity, hole-position tolerance, intended load condition, and target application. Our engineering team can review the insert configuration alongside the granite base, ceramic component, mineral casting, or UHPC structure.
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