Description
Product Overview
The Ruibapa flanged hex head bolt assortment is engineered for professionals who demand reliability and durability in demanding environments. Constructed from 10.9 grade alloy steel, each bolt offers exceptional tensile strength while the black zinc plating provides a robust barrier against rust and chemical exposure. The full‑thread design ensures a consistent grip along the entire shank, making these fasteners suitable for a wide range of applications, from heavy‑duty automotive assemblies to agricultural machinery and construction frameworks.
Every package contains a comprehensive set of components: flanged hex head bolts, matching flange nuts, flat washers, and lock washers. The flanged head acts as an integrated washer, distributing load evenly across the mating surface and reducing the risk of material deformation. This design eliminates the need for separate washers in many installations, streamlining the assembly process and saving valuable time on the shop floor.
![[Product front view showing all components]](https://www.qalvora.store/wp-content/uploads/2026/08/4bf3de77e05e48b5ae78afa93b4a259e.jpg)
Usage
These bolts excel in environments where moisture, vibration, and load fluctuations are common. In automotive repair shops, they secure engine brackets, transmission mounts, and suspension components, delivering a secure fit that resists loosening under dynamic forces. Farmers rely on the same bolts for tractor frame reinforcement, irrigation system fittings, and equipment housings, where exposure to soil, water, and chemicals is routine.
Construction professionals appreciate the versatility of the kit for structural steel connections, decking fasteners, and metal‑to‑wood joinery. The flanged head’s large bearing surface is especially beneficial when fastening to soft or composite materials, as it prevents the bolt from pulling through the substrate. Whether you are assembling a high‑performance vehicle, maintaining farm equipment, or erecting a commercial building, these fasteners provide the confidence of a secure, long‑lasting connection.
Why Choose Us
Ruibapa stands for precision engineering and rigorous quality control. Each bolt undergoes a multi‑stage inspection process, including dimensional verification, tensile testing, and coating adhesion checks, to guarantee that every piece meets or exceeds industry standards. Our black zinc plating is applied using a controlled electro‑galvanizing process that ensures uniform coverage and superior corrosion resistance, outperforming standard zinc‑galvanized fasteners.
We understand that downtime is costly, which is why our kits are packaged for immediate use. The assortment includes a range of sizes—from 1/4‑20 to M10‑1.5—allowing you to source all necessary fasteners in a single purchase, reducing inventory complexity and procurement lead times. Additionally, our dedicated customer support team is available to address any technical questions or concerns, providing after‑sales assistance that keeps your projects moving forward.
Key Features
- High‑strength 10.9 grade alloy steel delivers reliable load‑bearing capacity.
- Black zinc plating offers superior corrosion resistance for long‑term durability.
- Flanged head design distributes load evenly, reducing material stress.
- Full‑thread shank ensures consistent grip and easy installation.
- Comprehensive kit includes matching nuts and washers, backed by responsive customer support.
FAQ
What material is used for the bolts?
The bolts are made from 10.9 grade alloy steel, which provides high tensile strength and excellent performance under heavy loads.
Are the bolts suitable for outdoor use?
Yes, the black zinc plating protects the fasteners from moisture, rust, and chemical exposure, making them ideal for outdoor and wet‑environment applications.
Can I use these bolts with standard nuts and washers?
Absolutely. The kit includes matching flange nuts, flat washers, and lock washers, but the bolts are also compatible with standard hardware if you prefer to mix and match.
What sizes are included in the kit?
The assortment covers a broad range of sizes, including 1/4‑20, 3/8‑16, 5/16‑18, M6, M8, and M10 dimensions, each provided in multiple sets to meet diverse project needs.
How do I contact customer support for assistance?
You can reach our support team via the contact information provided on the product page. We respond promptly to technical inquiries, warranty claims, and any other concerns you may have.




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