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Thread Reducer Bushing
-- Steady & Reliable Manufacturer --
Product Overview
This bushing screws directly into an existing tapped hole: its external thread matches the larger hole, while its internal thread is the smaller size you actually need, effectively reducing the working thread size without re-machining the base part. It is a practical fix when a hole has already been drilled and tapped to a larger size than the application calls for.
We supply this bushing to machine shops, equipment repair teams and fixture builders who need to adapt an oversized or previously stripped tapped hole down to a smaller, usable thread size quickly and without welding or re-drilling.
Specifications
| Item | Detail |
|---|---|
| Material | Carbon steel (zinc plated), 300 series stainless steel, or brass |
| Design | External thread matches host hole; internal thread is the reduced size |
| Common Reductions | M12-to-M8, M10-to-M6, M16-to-M10; custom reductions on request |
| Body Style | Plain cylindrical body, hex-flange, or shoulder style |
| Length Options | Standard and extended lengths by size |
| Surface Finish | Zinc plate, passivated (stainless), or natural brass |
| Locking Option | Thread-locking compound or set-screw retention available on request |
| Packaging | Poly bag, inner box, export carton |
Application Fields
- ✓Reducing an oversized tapped hole to accept a smaller bolt
- ✓Repairing a stripped larger thread by stepping down to a smaller working size
- ✓Machine tooling and fixture plate thread adaptation
- ✓Mold and die repair where a hole was tapped to the wrong size
- ✓Adapting legacy equipment to current fastener stock
- ✓General maintenance thread-size correction
Key Advantages
- Reduces a tapped hole's working thread size without welding, re-drilling, or re-tapping the base part.
- Screws directly into the existing hole, so installation is fast and does not require special equipment.
- Available in common reduction combinations, covering most machine shop and repair scenarios without a custom order.
- Optional locking retention keeps the bushing from backing out under repeated bolt removal and reinstallation.
- Stainless and plated steel options let the bushing match the corrosion environment of the host part.
Company Profile
Dongtai Jinzhize Metal Products Co., Ltd.
As Thread Reducer Bushing Manufacturer and Thread Reducer Bushing 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.
