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A trusted Chinese manufacturer and exporter of high-strength bolts, nuts, washers, studs, U-bolts, and custom metal stamping parts. Compliant with ANSI/ASME, DIN, BS, ISO, and AS standards. Serving clients across North America, Europe, Australia, and the Middle East.
Zinc & HDG Coated
Corrosion-resistant finishes
A professional fastener supplier based in China with years of manufacturing excellence and international certifications.
BOLNUT Fastener Co., Ltd is a leading manufacturer and exporter of industrial fasteners in China. We specialize in producing high-quality bolts, nuts, washers, studs, U-bolts, and custom metal stamping parts based on customer drawings or samples.
Our export range includes threaded rods, hex bolts, flange bolts, carriage bolts, hex nuts, square nuts, flat washers, spring washers, and special fasteners. All products are manufactured according to international standards including ANSI/ASME, DIN, BS, ISO, and AS, with strength grades ranging from Class 4.8 to 12.9 and Grades 2, 5, 8, A325, A194.
Strict process from raw material to final inspection
Exported to Americas, Europe, Australia, Middle East
High-strength, precision-engineered fasteners for industrial, construction, and infrastructure applications.
Available in BLACK, ZINC, HDG finishes. Grades 8.8, 10.9, 12.9. Compliant with ANSI/ASME standards.
Class 8.8 | A325 | A490
Zinc, HDG, and stainless steel variants. Ideal for piping, railings, and structural support.
Stainless Steel | HDG | ZINC
High-tensile stud bolts in BLACK and HDG finishes. Used in high-pressure flange connections.
ASTM A193 B7 | 12.9 Strength
Integrated washer design for even load distribution. Zinc and HDG coated for durability.
Heavy Hex | A194 2H | HDG
Continuous threaded rod in B7, ZINC, and HDG. Ideal for anchor bolts and structural applications.
Full Thread | ASTM A193 | Metric & Imperial
HDG-coated for outdoor durability. Designed for highway safety barriers and roadside infrastructure.
HDG Finish | ASTM A325 | A490
Greater surface area for torque resistance. Available in ZINC and HDG coatings.
ANSI B18.2.2 | Class 8 | Heavy Duty
Prevents loosening under vibration. Available in BLACK and HDG finishes.
Split Type | SAE | USS Standards
Heavy-duty wood screws with hex head. ZINC and HDG coated for outdoor use.
Fully Threaded | High Torque | Corrosion Resistant
A2/A4 stainless steel bolts, nuts, and custom stamping parts. Ideal for marine and chemical environments.
AISI 304 | 316 | Corrosion ProofYears in Industry
Countries Served
Standards Compliant
OEM/ODM Support
Strict quality control from raw material to final shipment. In-house testing and inspection.
Products shipped to North America, South America, Europe, Australia, and the Middle East.
Direct factory pricing with fast response and reliable delivery schedules.
Our products meet ANSI/ASME, DIN, BS, ISO, and AS standards. We manufacture to strength grades including Class 4.8, 6.8, 8.8, 10.9, 12.9, and Grades 2, 5, 8, A325, A194.
Yes, we specialize in OEM/ODM manufacturing based on customer drawings, samples, or specifications. Our stamping and machining capabilities support custom designs.
We provide zinc plating, hot-dip galvanizing (HDG), black oxide, and stainless steel finishes to suit various environmental and corrosion resistance needs.
Please contact us via email or WhatsApp with your product specifications, quantity, and standards required. We respond promptly with competitive pricing and delivery terms.
Reach out to BOLNUT Fastener for quotes, samples, or technical support. We’re ready to serve your fastening needs.
Phone: 0086-18015689736
Fax: 86-512-58423902
Address: #3 Yangzijiang, Jingfeng Town, Jiangyin City, Jiangsu Province, China 214400
Contacts: Eric, Sammy
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