U Bolts china guangdong screws suppliers Car Wheel Bolts
Size：M6-M36
Manufacturing standard：ISO, GB, JIS, DIN, BS and ANSI standards, or drawings provided by customers.
Materials： iron, carbon steel, alloy steel, copper, stainless steel, plastics, high-temperature alloy, copper alloy, nickel-base alloy, high-strength alloy, corrosion-resistant alloy, etc.
Process： cold heading, punching, turning, milling, wire cutting, etc.
Treatment/Finishing: Brushing、Anodizing、Zinc Plated、Nickel Plated、Sn Plated.
Requirements： No Burrs、Scratches、Dents、Pits
Application： Structural Steel; Metal Building; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating
Packing：bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand
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Product Name
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U Bolts
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Size
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M8-M56 or Customized Size
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Material
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Steel,Stainless Steel,Alloy steel,Carbon Steel,Brass,Aluminum and So on
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Thread Type
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Fine Thread Or Coarse Thread or Hi-Lo Thread
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Grade
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4.8,8.8,10.9,12.9.etc
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Standard
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GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS etc
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Non-standards
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OEM is available, according to drawing or samples
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Finish
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Plain, black, zinc plated/according to your requirement
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Certification
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ISO9001,IATF16949,ISO14001
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Package
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according to customers requirement
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USE
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Automobile, aviation, new energy, high-speed rail
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Precision-Engineered Fasteners for Industrial and Structural Applications
U bolts are specialized fastening components designed for securing cylindrical items such as pipes, conduit, and tubing to structural supports. Characterized by their curved U-shape and externally threaded legs, U bolts are widely employed in the plumbing, automotive, marine, and civil engineering sectors due to their strength, versatility, and ease of installation. Depending on performance requirements, U bolts are manufactured using a range of materials such as Grade 5 carbon steel, Grade 8 alloy steel, and AISI 304 or 316 stainless steel, each selected for its tensile strength and environmental compatibility.
To meet varying load and exposure conditions, U bolts are produced according to international specifications including ASTM A307, ASTM A193 B7, DIN 3570, and ASME B18.31.5. These standards ensure consistent dimensional tolerances, corrosion resistance, and mechanical performance. Protective surface treatments such as hot-dip galvanization, zinc electroplating, and black oxide coating are commonly applied to enhance resistance against moisture, salt spray, and chemical exposure.
Standard U bolt sizes typically range from M6 to M24 in metric configurations and 1/4″ to 1″ in imperial units, with custom sizing available upon request. Key specifications often include inside diameter, thread length, and leg length, all of which must be precisely controlled to ensure reliable clamping force and structural integrity in high-vibration environments.
As a manufacturer and supplier specializing in precision fasteners, we offer OEM and bulk solutions tailored to meet exact client requirements. Our U bolts undergo rigorous quality inspection to meet or exceed industry expectations in both static and dynamic applications. Whether for pipe hanger assemblies, mechanical supports, or vehicle suspension systems, our engineered U bolts provide long-term performance and stability across demanding conditions.
