Stainless Steel U Bolts
Grade 304 SS U-Bolts are a kind of bolts which are produced the shape of the letter U. Hence, the name is self explanatory to its shape. SS U Bolts, as expected tend to have screw threads on both ends. Primarily used as a means to support pipework, in addition to permitting passage of fluids and gasses through pipes. An additional purpose of U-bolts could also be to hold ropes together.
A derivative of regular U-bolts is the square U bolt. The difference between a regular U-bolt and the Ss Square U Bolts is that the shape of the latter is squared. While different alloy grades are used in the manufacture of SS Square U Bolts, their selection is solely done on the basis of their application. For instance, if the cost of the entire application is to be drastically reduced, the client would prefer using the more economical alloy i.e. grade 304. While grade 304 is a highly economical grade and is widely used by many industries, there are instances wherein their mechanical as well as corrosion resistance properties may not be sufficient enough.
That is where SS 316 U Bolts save the day. Despite being a tad bit expensive in comparison to grade 304, the performance of grade 316 Square Bend Ss U-Bolts, in terms of corrosion resistance and mechanical properties tend to remain unmatched by grade 304. In industries like pharmaceutical, biomedical as well as food and beverage industry, where hygiene is given utmost importance, the SS U Bolt Manufacturers often recommend grade 316 to be. Furthermore, the application these SS U-Bolts Dimensions are to be used for also act as a guideline for manufacturers during production.
Stainless Steel U Bolts Specifications
| Stainless Steel U Bolts Material Specifications | American Society of Mechanical Engineers SA 193 |
| SS U Bolt Length in Inch | 0.11 Inch to 10 Inch |
| Size of Stainless Steel Square U Bolts | M3 to M56, 12.7MM to 50.8MM |
| Standard of SS 316 U Bolts | American Society for Testing and Materials, Deutsches Institut, British Standards |
SS U Bolt Size Chart In Mm
| Size |
Diameter* |
Height |
||
|---|---|---|---|---|
| Square U | Round U | Custom U | ||
| 2 | 4 | 1.6 | 1.2 | - |
| 2.5 | 5 | 2 | 1.6 | - |
| 3 | 5.5 | 2.4 | 1.8 | 4 |
| 4 | 7 | 3.2 | 2.2 | 5 |
| 8 | 13 | 6.5 | 4 | 8 |
| 5 | 8 | 4 | 2.7 | 5 |
| 6 | 10 | 5 | 3.2 | 6 |
| 10 | 17 | 8 | 5 | 10 |
| 12 | 19 | 10 | 6 | 12 |
| 14 | 22 | 11 | 7 | 14 |
| 16 | 24 | 13 | 8 | 16 |
| 18 | 27 | 15 | 9 | 18.5 |
| 7 | 11 | 5.5 | 3.5 | - |
| 20 | 30 | 16 | 10 | 20 |
Torque Chart of 4-inch stainless steel U bolts
| Sizes of Stainless Steel U Bolts in Inches |
Threads Per Inch |
Standard Dry Torque in Foot | |||||
| 1 1/8 | 7 | 413 | 432 | ||||
| 12 | 390 | 408 | |||||
| 1 1/4 | 7 | 523 | 546 | ||||
| 12 | 480 | 504 | |||||
| 1 1/2 | 6 | 888 | 930 | ||||
| 12 | 703 | 732 | |||||
| 4-inch SS U bolts Sizes in Inches | Threads Per Inch |
Standard Torque in Inch | |||||
| 1/4 | 20 | 75.2 | 78.8 | ||||
| 28 | 94.0 | 99.0 | |||||
| 5/16 | 18 | 132 | 138 | ||||
| 24 | 142 | 147 | |||||
| 3/8 | 16 | 236 | 247 | ||||
| 24 | 259 | 271 | |||||
| 7/16 | 14 | 376 | 393 | ||||
| 20 | 400 | 418 | |||||
| 1/2 | 13 | 517 | 542 | ||||
| 20 | 541 | 565 | |||||
Dimensions Standard of 18-8 Stainless Steel U Bolts
| Size (B x C) |
Thread Length (D) |
Fits Pipe Size | ||
|---|---|---|---|---|
| 1/4 inch-20 | ||||
| 9/16 inch | x | 1-3/8 inch | 3/4 inch | 1/4 inch |
| 5/16 inch-18 (A) | ||||
| 1-3/4 inch | x | 3 inch | 1-1/2 inch | 1-1/4 inch |
| 3/8 inch-16 (A) | ||||
| 2 inch | x | 3-1/8 inch | 1-1/2 inch | 1-1/2 inch |
| 1/2 inch-13 (A) | ||||
| 3 inch | x | 5 inch | 2-1/2 inch | 2-1/2 inch |
Can we use U Bolt as a pipe clamp?
An U-bolt is a kind of a fastener manufactured in the shape of the letter U and these bolts have screw threads on both ends. Primarily, U bolts are used to support pipework or pipes through which permits the passage of fluids and gasses. Today, many buyers prefer using a u-Bolt as a pipe clamp for any kind of tubing or for a round bar. Similar to a pipe clamp, the u-Bolt is often recommended for use in the suspension for cold pipelines that could either be insulated or may not be insulated. When used on pipes, the u-Bolt has the ability to not only grasp it but also facilitate hoisting or suspension. For instance in buildings and construction projects, gravity in amalgamation with an incorrect set up could lead to objects falling or getting corroded. In this scenario using a u-Bolt as a pipe clamp is considered to be a good idea. Especially since, securing these u-bolts to an overhead structure such as a beam, or ceiling, could aid in limiting vibrations, while securing elevated pipes.
U-bolts are also particularly useful to keep pipes snug during shipping. During transportation, these pipes hop up and down, which in turn could lead to breakage. That’s where a U-bolt steps in. They can restrict pipes movements at the same time adding a buffer between the pipes and other metals, thus effectively preventing breakage.