Custom Fasteners Manufacturer in Automotive and Vehicle Assembly

We focus on providing high-performance and commercial fasteners for many industries, ranging from small to large volumes, including automotive, trucks and trailers, heavy construction, agriculture, military, material handling, and outdoor power equipment.

Low MOQ From 1000 Pics

What we do

We are a professional Standard & Custom Fastener Supplier, tailoring the ideal fasteners for you: Starting from fast and accurate quotes to CAD drawings, mold design, and delivery.

Bolts Materials

Carbon Steel
Stainless Steel
Alloy Steel
Aluminum
Brass
Copper Alloys
Nickel Alloys
Titanium/Ti Alloy
Specialty Materials

Bolts Sizes

From M3 to M42
hot forging capabilities from 1/2″ diameter through 2-1/2″ diameter

Surface Treatments

Nickel Plated
Dumb Nickel
Black Nickel
White/Blue/Black/Yellow Zinc
Chrome Plated
Bronze Plated
Tin Plated
Silver Plated
Purified
Oxidized

Head and Thread Types

Hex bolts
Heavy hex bolts
Square head bolts
Eye Bolts
Stud bolts
Flange bolts
Socket head bolts
Stripper bolts
Carriage bolts
Plow bolts
U bolts
Blade bolts
Round head bolts
Tower flange bolts
Anchor bolts
Foundation bolts
Structural bolts

Manufacturing Capabilities

Heat Treating
Cold Forging
Cutting
Turning
Milling
Drilling
Threading
Surface Grinding
Finishing
Laser Cutting
Forming
Wire Forming
Stamping

Kitting Service

Quick and tailored bagging and packing solutions that streamline your supply of crucial components during their storage, transportation, and use.

Specials are our specialty

With the industry’s top R&D team and advanced production facilities, HIITIO is able to provide you with a full range of customized services from single products to total systems. Whether it is special specifications, unique features or exclusive design, we can meet your needs.

Custom Fasteners Manufacturer

Who We Are

Sunhybolts (SUNHY Pipe Fittings Co., Ltd.) is a China-based industry-leading manufacturer of specialty fasteners, bolts, and hardware for bolted connections.
The company mainly produces ANSI, DIN, ISO, JIS, and GB high-strength standard parts as well as non-standard parts made from carbon steel, stainless steel, brass, and more.

Our product inventory range is broader than that of our competitors, providing flexible customization options. Whether standard fasteners or special requirements, we can meet your needs and provide optimal support for your projects.

We work directly with customers and distributor partners to customize a solution rather than one-size-fits-all products.

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Why Choose Us

Quick Customization

We have a professional team of engineers and advanced CAD/CAM systems, combined with our state-of-the-art equipment, to quickly turn your ideas into actual products. From receiving drawings to completing samples, it usually takes only 7-10 days, much faster than the industry average.

CNC Lathe

Surface Grinding Machine

Punching Machine

Automatic Screw Machine

Automatic Lathe Machine

Quality Assurance

We implement a comprehensive quality management system, including raw material inspection, production process control, and finished product testing.

Each batch undergoes up to 15 strict inspections to ensure dimensional accuracy, material performance, and surface treatment quality. Our defect rate is below 0.1%, far better than the industry average.

On-time Delivery

We have a modern factory of 20,000 square meters and ample inventory. Our advanced warehouse management system provides real-time pricing and inventory information for all products, combined with an efficient production management system, ensuring 100% accuracy for repeat orders.

Professional Support

We are equipped with an experienced team of fastener experts, ready to answer your questions and ensure your needs are perfectly met. We take pride in our effective communication with clients, allowing you to focus on your core business while leaving fastener issues to us.

Reasonable Pricing

As a direct manufacturer, we eliminate intermediaries, passing the cost savings on to our customers. Our prices are typically 15-20% lower than the market average, without compromising product quality, offering you the best value. With a broad network of manufacturers and distributors, we can provide quick delivery, quantity-based discounts, and cost-effective fastener solutions.

Let our application engineers provide recommendations for your project.

One-stop service from design to production
Reliable long-term partnerships
Industry-leading innovation capabilities