U-bolts are one of the most common fasteners used for various applications. They are often used to secure multiple industries’ anchor points, such as cables and pipes. If you’re unfamiliar with this fastener, here is everything you need to know about them.
What Are U-Bolts?
U-bolts are “U” shaped fasteners with two threaded arms that can be screwed around an object or through a hole. U-bolts are typically made from steel, stainless steel, brass, or copper and can come in many different sizes and shapes. The size of the U-bolt is determined by its diameter—the distance between each arm—and its length—the overall measurement from end to end.
Uses of U-Bolts
U-bolts are highly versatile and have many different uses. They’re commonly used in automotive, industrial, marine, and construction applications. Some common uses include securing anchor points for cables and pipes on boats, cars, trucks, trailers, RVs, aeroplanes and helicopters. In addition to these uses, they can also be used for holding down machinery and equipment and attaching signs to poles or fences.
Essential Considerations When Buying U-Bolts
When buying U-bolts, there are several factors that you should consider before making your purchase. One important factor is the material; if your application requires it to be exposed to moisture or other elements, you may choose a corrosion-resistant material like stainless steel or brass. It’s also essential to think about the size; if the bolt is too big, it won’t fit properly, while if it’s too small, it won’t provide enough support for your application. Finally, you should ensure that the threading on the arms matches whatever bolts you will use, so they fit correctly when screwing them into place.
U-bolt Properties
- U-bolts are bolts in the shape of a “U” used to secure pipes or other cylindrical objects to a surface.
- U-bolts are typically made from carbon steel or stainless steel and can be either plain or galvanized.
- U-bolts can secure objects to various surfaces, including concrete, wood, and metal.
- U-bolts typically have two nuts and two washers, which are used to secure the bolt in place.
- U-bolts can be purchased from a variety of hardware stores or online retailers.
U-bolt Dimensions
| Pipe Size | Description | Thread Size | Centres (N) | (M) | Thread Length (K) | S (Max) | Max Load up to 340oC | Item Weight | Part No. | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal Size | Outside Diameter (A) | ||||||||||
| NB | mm | mm | mm | mm | mm | kN | Kg | Carbon Steel | Stainless Steel | ||
| 15 | 21.3 | 15NB U-Bolt Clamp | M8 | 30 | 50 | 25 | 7 | 0.68 | 0.07 | 181001 | 181030 |
| 20 | 26.7 | 20NB U-Bolt Clamp | M8 | 35 | 60 | 25 | 10 | 0.54 | 0.08 | 181002 | 181031 |
| 25 | 33.4 | 25NB U-Bolt Clamp | M8 | 45 | 65 | 25 | 10 | 0.43 | 0.08 | 181003 | 181032 |
| 32 | 42.2 | 32NB U-Bolt Clamp | M8 | 55 | 75 | 25 | 10 | 0.34 | 0.09 | 181004 | 181033 |
| 40 | 48.3 | 40NB U-Bolt Clamp | M10 | 60 | 90 | 35 | 16 | 0.60 | 0.18 | 181005 | 181034 |
| 50 | 60.3 | 50NB U-Bolt Clamp | M10 | 75 | 100 | 35 | 16 | 0.48 | 0.20 | 181006 | 181035 |
| 65 | 76.1 | 65NB U-Bolt Clamp | M12 | 90 | 130 | 45 | 19 | 0.70 | 0.34 | 181007 | 181036 |
| 80 | 88.9 | 80NB U-Bolt Clamp | M16 | 105 | 150 | 50 | 19 | 1.50 | 0.70 | 181008 | 181037 |
| 100 | 114.3 | 100NB U-Bolt Clamp | M16 | 135 | 175 | 50 | 19 | 1.17 | 0.81 | 181009 | 181038 |
| 125 | 141.3 | 125NB U-Bolt Clamp | M16 | 160 | 200 | 50 | 19 | 0.94 | 0.91 | 181010 | 181039 |
| 150 | 168.3 | 150NB U-Bolt Clamp | M20 | 190 | 235 | 55 | 19 | 1.52 | 1.69 | 181011 | 181040 |
| 175 | 193.7 | 175NB U-Bolt Clamp | M20 | 215 | 270 | 55 | 19 | 1.32 | 1.85 | 181012 | 181041 |
| 200 | 219.1 | 200NB U-Bolt Clamp | M20 | 245 | 295 | 55 | 19 | 1.17 | 2.07 | 181013 | 181042 |
| 225 | 244.5 | 225NB U-Bolt Clamp | M20 | 266 | 315 | 60 | 19 | 1.05 | 2.18 | 181014 | 181043 |
| 250 | 273.0 | 250NB U-Bolt Clamp | M20 | 300 | 350 | 60 | 22 | 0.94 | 2.43 | 181015 | 181044 |
| 300 | 323.9 | 300NB U-Bolt Clamp | M20 | 350 | 400 | 60 | 22 | 0.79 | 2.75 | 181016 | 181045 |
| 350 | 355.6 | 350NB U-Bolt Clamp | M24 | 385 | 440 | 65 | 22 | 1.25 | 4.38 | 181017 | 181046 |
| 400 | 406.4 | 400NB U-Bolt Clamp | M24 | 435 | 500 | 65 | 22 | 1.09 | 4.92 | 181018 | 181047 |
| 450 | 457.2 | 450NB U-Bolt Clamp | M24 | 485 | 540 | 70 | 22 | 0.97 | 5.32 | 181019 | 181048 |
| 500 | 508.0 | 500NB U-Bolt Clamp | M24 | 540 | 600 | 70 | 22 | 0.87 | 5.87 | 181020 | 181049 |
| 550 | 559.0 | 550NB U-Bolt Clamp | M24 | 584 | 650 | 70 | 22 | 0.73 | 6.34 | 181021 | 181050 |
| 600 | 609.6 | 600NB U-Bolt Clamp | M24 | 640 | 700 | 70 | 22 | 0.67 | 6.81 | 181022 | 181051 |
| 650 | 660.4 | 650NB U-Bolt Clamp | M24 | 690 | 740 | 70 | 24 | 0.62 | 7.20 | 181023 | 181052 |
| 700 | 711.2 | 700NB U-Bolt Clamp | M30 | 750 | 810 | 80 | 24 | 1.18 | 12.49 | 181024 | 181053 |
| 750 | 762 | 750NB U-Bolt Clamp | M30 | 800 | 860 | 80 | 24 | 1.10 | 13.22 | 181025 | 181054 |
| 800 | 812.8 | 800NB U-Bolt Clamp | M30 | 850 | 910 | 80 | 24 | 1.04 | 13.95 | 181026 | 181055 |
| 850 | 863.6 | 850NB U-Bolt Clamp | M30 | 900 | 960 | 80 | 24 | 0.98 | 14.68 | 181027 | 181056 |
| 900 | 914.4 | 900NB U-Bolt Clamp | M30 | 950 | 1010 | 80 | 24 | 0.93 | 15.41 | 181028 | 181057 |
| 1000 | 1016.0 | 1000NB U-Bolt Clamp | M30 | 1050 | 1060 | 80 | 24 | 1.56 | 24.94 | 181029 | 181058 |
Conclusion:
U-bolts are an essential fastener in many industries, from automotive to marine applications. While they may not seem like much at first glance, they play a crucial role in keeping objects secure in various settings. When buying U-bolts, it’s important to consider material type and size to get precisely what you need for your specific application requirements. With this information in mind, we hope that you now better understand why U-bolts are so helpful!
A passionate metal industry expert and blogger. With over 5 years of experience in the field, Palak brings a wealth of knowledge and insight to her writing. Whether discussing the latest trends in the metal industry or sharing tips, she is dedicated to helping others succeed in the metal industry.
