Special Fasteners: Stainless Steel Ball-Joint Flange Bolts with Cross-Drilled Holes
This component is a specialized, custom-engineered fastener that integrates positioning, pivoting, securing, and positive locking capabilities into a single unit. Due to its complex, multi-feature design (combining a spherical head, internal/external ball socket, cross-drilled hole, and integrated flange face), it is typically utilized in applications with demanding requirements for spatial degrees of freedom, vibration resistance, and safety margins.
Technical Specifications
| Parameter | Specification |
| Category | Special Fasteners / Custom Fasteners |
| Product Name | Ball-joint bolts, Flange bolts, Stainless steel bolts |
| Manufacturer | HETAI |
| Origin | Dongguan, China (Made in China) |
| Thread Size | M3 to M28 |
| Length Range | 5 mm to 300 mm |
| Material Options | Iron, Carbon Steel, Stainless Steel, Copper, Aluminum, Titanium |
| Surface Finish | Plain (As-machined), Zinc yellow-chromate, Zinc plated, Nickel plated, Chrome plated, Electrophoretic coating (E-coat), Painted/Powder coated, Anodized |
| Property Class/Grade | Class 4.8, 8.8, 10.9, 12.9 |
| Target Industries | Electromechanical equipment, New Energy Vehicles (NEVs), Mechanical machinery, Aerospace hardware, and Smart/Intelligent electromechanical systems. |
| Notes | OEM/ODM custom manufacturing based on drawings or samples; complimentary design services available. |
Core Applications
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Automotive Manufacturing & Modifications:
This serves as the primary use case. These bolts are widely used in chassis suspension systems, linkages, and steering knuckles. The ball-and-socket design allows interconnected components to pivot freely within a specific angular range. Meanwhile, the cross-drilled hole accommodates a split pin (cotter pin) for positive mechanical locking, preventing the fastener from backing out under high-speed operation or intense vibration.
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Aerospace Equipment:
Extensively utilized in aircraft control surfaces and landing gear assemblies. The stainless steel construction provides superior corrosion resistance, the flange face distributes clamping loads over a wider surface area, and the cross-drilled hole acts as a mandatory anchor point for safety wire (lockwire) installations to meet stringent aerospace safety standards.
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Automation & Robotic Arms:
Frequently deployed in the joint articulations of industrial robots to facilitate multi-axis synchronous motion. The ball socket can be packed with grease to ensure smooth, low-friction joint rotation.
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Precision Instruments & Medical Devices:
Applied in support structures requiring both precise angular adjustment and rigid locking, such as the articulating links of operating tables or the adjustable leveling feet of precision optical tables.
