bolts
Bolts are externally threaded fasteners used with nuts or tapped holes, commonly applied in construction, machinery, automotive, metal structures, and industrial equipment.
product list
Fast Bite. Firm Hold. Zero Hassle.
Material & Surface Treatment
Commonly used and accept your customization.
how to choose？
1. Select Bolt Grade Based on Load Requirements
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Light-duty structures (general equipment assembly): Choose A2-70, A4-70, Grade 4.8, Grade 5.8.
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Medium-duty structures (machinery, steel structures): Use Grade 8.8, offering balanced strength and stability.
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Heavy-duty or dynamic loads (automotive, heavy machinery): Recommend Grade 10.9 or 12.9, providing high tensile strength for critical connections.
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Corrosive or outdoor environments: Prioritize 304 / 316 stainless steel or high-corrosion-resistant coatings such as hot-dip galvanizing or Dacromet.
2. Choose Surface Treatment Based on Environmental Conditions
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Indoor dry environments: Zinc plating, nickel plating, or black oxide.
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General outdoor use: Hot-dip galvanizing, Dacromet, or other long-lasting anti-corrosion coatings.
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Marine, high-salt, or chemical environments: 316 stainless steel or HDG + organic coating systems for maximum life expectancy.
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High-temperature applications (>300°C): Use heat-resistant bolt materials such as A-193 B7 or A-320 L7.
3. Select the Right Thread Type
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Metric threads: Globally used, ideal for machinery, equipment, and solar mounting structures.
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UNC/UNF threads: Standard in North and South America and widely used in maintenance and repair industries.
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Coarse threads: Better resistance to vibration and less prone to stripping; suitable for structural applications.
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Fine threads: Provide stronger locking performance; recommended for precision equipment or high-vibration conditions (e.g., automotive, aerospace).
Designed for Harsh Environments. Trusted Worldwide.
Reliable fastener manufacturer for solar, roofing, and industrial projects.
Your Trusted Fastening Solution!
Product advantages
What You care about, what we produce
Sharp Thread Form
Precise, uniform threads for smooth cutting action and strong fastening grip.Hardened Point
Enables efficient self-tapping into metals, plastics, and thin steel plates without pre-tapping.Standard Drive Types
Offered in Phillips, slotted, and hex drives for fast, stable, and labor-saving installation.
fastener series
- Self-tapping screw
- machine screw
- washer
- nut
- solar hanger bolt
high quality stainless steel fastener
fastener series
You can find anything you want here.
The Benefits of Ordering Bolt from Bilateral
quality assurance
Lorem ipsum dolor sit amet, consectetur adipiscing viverra ornare, eros dolor nulla.Price advantage
Factory direct, bulk purchases enjoy discountsLow MOQ
Standard products: small MOQ supported, mixed size orders accepted.
Custom products: MOQ depends on size and tooling requirements.delivery date
Standard products: Orders will be processed 15-30 days after placement Custom products: 45 days after placement，specific times will need to be discussed.
Common Questions
Frequently asked questions
What material are your bolts made of？
We mainly use high-grade SUS304/SUS316, and can offer SUSU410 or other materials as required.
Can you customize head types or drive types?
Absolutely. Custom designs and OEM specifications are available.
What is your MOQ?
Standard products: small MOQ supported, mixed size orders accepted.
Custom products: MOQ depends on size and tooling requirements.
Do you provide samples?
Yes. Samples are available for testing. Standard samples are usually free, only freight cost is required.
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Delivery
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