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Parallel Keys
This product features a rectangular, flat structure, made of carbon steel/stainless steel, machined for a smooth surface and high dimensional accuracy. It is compatible with shaft and hub grooves, ensuring stable torque transmission and a tight fit after installation. The full series includes three types: A, B, and C, all readily available. The surface is rust-proofed, meets industry standards through quality control, and material testing reports are available. Custom sizes are also supported.
- Executive Standard
- Specification Range
- Grade & Strength
- Common Materials
- Surface Treatment
- Surface Treatment
- Industry Classification
GB/T 1095; ISO 2491; DIN 6885; ANSI/ASME B17.1
Metric: Width 2mm~20mm, Height 2mm~14mm, Length 6mm~100mm, divided into Type A (round head), Type B (square head), and Type C (single round head); Imperial: Width 1/8"~3/4", Height 1/8"~9/16", Length 1/4"~4".
High-quality low-carbon steel, medium-carbon steel, alloy steel, 304 stainless steel, 316 stainless steel, brass, aluminum alloy, etc.
Environmentally friendly blue-white zinc, colored zinc, black zinc, environmentally friendly nickel plating, zinc-nickel alloy plating, Dacromet coating, electrophoresis, PVD, stainless steel natural color, stainless steel passivation, etc.
Mechanical transmission, motors, speed reducers, shaft connections, etc., suitable for connecting shafts and hubs, transmitting torque, easy to install and disassemble.
Do you need non-standard fasteners, precision metal parts, or custom structural components for a specific application?
Yongji helps you develop and manufacture special parts and custom products based on your drawings, samples, technical requirements, and target application scenarios.
Whether you need prototype quantities, pilot production, or stable mass supply, we provide an integrated solution from engineering review to production and delivery.
From fasteners to structural parts, Yongji offers integrated development and manufacturing for a wide range of custom precision hardware products.
Whether you need a few pieces for validation, small batches for development, or large volumes for mass production, we can support your project at different stages.
With integrated manufacturing resources in China and Vietnam, Yongji helps customers achieve stable quality, scalable production, and reliable delivery.
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Yongji Precision Hardware is a global manufacturer specializing in precision fasteners and metal structural components. We are China Parallel Keys-Turned & Misc Parts Suppliers and Wholesale Parallel Keys-Turned & Misc PartsExporter && Company. Founded in 2003, the company has over two decades of experience serving international OEM and ODM customers across multiple industries.
With integrated manufacturing capabilities including cold heading, stamping, CNC machining and sheet metal fabrication...
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