Square U bolts are used when a project needs stable clamping, accurate positioning and strong load support. Compared with round U bolts, a square U bolt gives a flatter contact area and is often selected for steel structures, trailers, cable tray brackets, pipe supports, photovoltaic mounting systems and machinery frames.
What Is a Square U Bolt?
A square U bolt is a bent fastener with two threaded legs and a flat top section. The shape makes it suitable for fixing square tubes, rectangular beams, channel steel and flat-bottom supports. It can be assembled with hex nuts, flat washers, spring washers or customized plates according to the project requirement.
Common Standards and Size Information
Many buyers search for DIN3570 U bolts because the standard gives clear guidance for dimensions and production control. When sending an inquiry, it is better to provide the rod diameter, inside width, inside height, thread length, material grade and surface treatment. These details help avoid assembly problems and make quotation faster.
- Diameter: M6, M8, M10, M12, M16, M20 and customized sizes
- Material: carbon steel, stainless steel or customer-specified steel grade
- Surface treatment: zinc plated, hot dip galvanized, black oxide or plain finish
- Thread: full thread on both legs or customized thread length
- Packing: cartons, woven bags, pallets or export seaworthy packaging
Where Are Square U Bolts Used?
Square U bolts are widely used in construction and industrial projects because they are easy to install and provide reliable clamping strength. Typical applications include pipe hangers, steel beam fixing, fence hardware, truck and trailer parts, cable tray supports, solar brackets, mechanical equipment and agricultural machinery.
How to Choose the Right U Bolt for Bulk Purchase
For bulk orders, price is important, but the product should also match the working environment. Indoor dry environments can often use zinc plated U bolts. Outdoor or humid environments may require hot dip galvanized U bolts or stainless steel. For load-bearing projects, buyers should confirm the material grade, thread accuracy, bending quality and nut matching before shipment.
Quality Points We Check Before Delivery
SHENHUI FASTENER focuses on consistent dimensions, clean thread, stable bending shape, smooth surface treatment and reliable packaging. We can supply square U bolts together with nuts and washers to help customers reduce sourcing time and keep assembly parts matched in one shipment.
Order DIN3570 Square U Bolts from China
If you need square U bolts for construction, pipe support, steel structure or machinery projects, send us the drawing, size list or sample photo. Our team can quote standard and customized U bolts for wholesale and project supply.
Contact SHENHUI FASTENER for DIN3570 square U bolts, zinc plated U bolts, hot dip galvanized U bolts and customized fastening parts.