Stainless steel U-bolt (A2/A4) with precision rolled threads, designed for pipe clamping and structural fixing. Corrosion-resistant, matching DN10-DN100+ tube OD. Ideal for flanges, pumps, marine, outdoor, and PV supports requiring durable U-shape locking.
Stainless steel U-bolts are made from high-quality 304 (or 316) stainless steel through cold bending, with standard metric external threads machined on both ends. The surface retains a natural silver-white metallic finish, eliminating the need for plating and offering excellent resistance to rust, corrosion, and high-temperature oxidation. The product features uniform bending curvature, precision rolled threads with full thread profiles, ensuring smooth engagement with matching nuts of the same specification. By referring to the nominal diameter DN10–DN100 (and larger sizes) and corresponding steel pipe outer diameter charts, these bolts can be precisely matched to various pipe diameters for secure clamping applications. Widely used in pipe clamping, equipment base mounting, construction embedding, and outdoor structural installations requiring circumferential fastening, the product is certified under ISO 9001 quality management systems and offers flexible customization options.

U-bolts
Name
Material
Stainless steel 304/316
Standards
GB,DIN, BSW, JIS, UNC, UNF, Non-standard, Customized Drawing
Thread
Metric, UNC, UNF, BSW, BSF
Sizes
DN10-DN100
Finish
Plain
MOQ
Stardard item(Usually little hundred-little thousand)
Price
0.3USD/PCS-25USD/PCS
Product Feature
Stainless steel corrosion-resistant: Made of 304/316 materials, it is resistant to rust and moisture, suitable for humid, outdoor, chemical and marine environments. The original color surface is environmentally friendly and there is no risk of coating peeling.
Structurally stable: U-shaped ring embrace design, combined with external threads at both ends and nuts, the force is evenly distributed, the clamping force is strong, effectively preventing pipeline sliding and vibration loosening.
Precision threads: Both ends are formed by rolling, with high thread accuracy, smooth rotation, and good anti-biting performance.
Comprehensive specifications: Covering DN10 to DN100 (can be extended to DN600) nominal diameters.
Forming and appearance: Cold bending process ensures smooth transition of the arc surface, without cracks, and combines structural strength with appearance consistency.
Our Strength
· Direct from manufacturer to customer, On time delivery
· Completely fastener products,offers one - stop shopping service.
· High quality and competitive price, saving your cost.
· Product complies with iso9001 and ts16949 certification
· After shippment, we will offer the Material report and Test report.
Product Application
Ideal for pipe clamping and fixing (valves, pumps, chemical lines, water supply), mechanical equipment bases, glass curtain walls, and stainless steel railings. Also suited to photovoltaic supports, marine/coastal hardware, and outdoor steel structures requiring corrosion resistance and robust U-shape locking.
Send Inquiry
Please feel free to fill your inquiry in the form below. We will reply you in 24 hours.
Q: Are you trading company or manufacturer ?
A: We are factory
Q: How long is your delivery time?
A: Generally it is 2-5 days if the goods are in stock. or it takes around 20 days if the goods are not in stock, certainly,it is according to your quantity.
Q: Do u do Non-standard Fasteners,and How about the OEM/ODM?
A:Yes,we do Non-standard Fasteners,OEM/ODM as well,and we have 20 years more experience in this line.We have complete production line, R&D Center. Pre-sales and after-sales support. Let u no worries about the quality.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free,but u need charge the freight at the first time.
Q:Do you sell little quantity,like few hundred and few thousand?
A: It depends on the stock. if we have ,that's ok. if not,it needs MOQ.