Français
Español
Deutsch
Heavy Duty Key-Locking Insert
-- Steady & Reliable Manufacturer --
Product Overview
This is the reinforced version of our key-locking insert, made with a thicker bushing wall and larger locking keys to handle higher torque and tensile loads than the standard key-locking design. It targets structural joints and high-torque fastener locations where even a standard key-locking insert would be under-rated.
We produce this size and strength range for heavy equipment, off-highway and structural steel fabrication buyers who need a threaded connection point in a soft or thin base material that still has to carry near-parent-bolt torque and tensile values.
Specifications
| Item | Detail |
|---|---|
| Material | Alloy steel with plating; 300 series stainless steel on request |
| Thread Size Range | Metric M8 – M36; Unified 5/16"-18 – 1-1/2"-6 |
| Wall Thickness | Increased wall section versus standard key-locking insert, same nominal size |
| Design | Solid bushing body with 4 or 6 external locking keys |
| Installation Method | Tap, cut keyway, drive insert, stake keys with heavy-duty tool |
| Surface Finish | Zinc-nickel plate, phosphate & oil, or passivated (stainless) |
| Torque/Tensile Rating | Higher rated pull-out and torque-out values than standard, size-for-size |
| Packaging | Poly bag, inner box, export carton; wooden crate/pallet for larger sizes |
Application Fields
- ✓Heavy construction and mining equipment
- ✓Off-highway vehicle chassis and structural mounts
- ✓Structural steel fabrication and heavy machinery frames
- ✓Wind turbine tower and nacelle structural joints
- ✓Marine and offshore structural fittings
- ✓Press and stamping die structural inserts
Key Advantages
- Thicker bushing wall and larger keys carry substantially higher torque and tensile load than a standard key-locking insert of the same nominal size.
- Suited to structural joints where fastener failure would be a safety concern, not just a maintenance inconvenience.
- Zinc-nickel plating option extends corrosion life in outdoor and marine structural applications.
- Same basic installation sequence as the standard key-locking insert, so crews do not need a separate training path.
- Reduces the need to oversize the base material or weld in a separate steel boss for a high-torque connection point.
Company Profile
Dongtai Jinzhize Metal Products Co., Ltd.
As Heavy Duty Key-Locking Insert Manufacturer and Heavy Duty Key-Locking Insert Factory, Dongtai Jinzhize Metal Products Co., Ltd. is a specialized manufacturing facility dedicated to threaded connection products for the automotive and aerospace sectors. We primarily produce Helical Wire Inserts, Self-Tapping Inserts, Key Locking Inserts, Threaded Adapters, Oil Plugs, as well as matching installation taps and tools.
Established in 2015, the company operates from a 10,000-square-meter-owned manufacturing plant equipped with hundreds of machine tools and automated production systems. Through years of development, we have built an experienced team of design, development, and production specialists, complemented by a rigorous quality management system and comprehensive after-sales service mechanism.
Our products are widely utilized in the automotive industry (including engines and transmissions for both passenger and commercial vehicles), the aerospace industry, and rail vehicle manufacturing.
With an annual output value of 153 million RMB in 2024, we possess the capability for a large-scale, stable supply. We are committed to providing customers with highly consistent, traceable products and reliable service support.
