Galvanized Round U-Bolt Assembly 3/8 x 3 x 8 is a hot‑dipped galvanized round U‑bolt assembly sized for a 3/8" rod with a 3" inside width and 8" inside length; it typically includes nuts, flat washers, and lock washers and fits pipe diameters up to about 2.75".
Product Overview
The Galvanized Round U‑Bolt Assembly 3/8 x 3 x 8 is a round‑bend U‑bolt made from hot‑dipped galvanized steel for corrosion resistance. It’s sold as an assembly (U‑bolt plus hardware) and is commonly used to secure pipe, conduit, or round stock to posts, beams, or mounting plates.
What's Included and Fit
• Included: U‑bolt, nuts, flat washers, and lock washers as a complete assembly.
• Fit: Designed to clamp pipe up to approximately 2.75" OD (check your pipe OD against the 3" inside width to confirm fit).
Dimensions and Material
• Rod diameter: 3/8" (threaded rod size).
• Inside width: 3" (distance between legs).
• Inside length: 8" (length of the U shape) with thread length about 6".
• Finish: Hot‑dipped galvanized for outdoor and marine resistance; material is standard steel with HDG coating.
Typical Uses and Installation Tips
• Common uses: Securing plumbing or conduit, pole and sign mounting, leaf spring or suspension clamps on trailers, and general pipe support.
• Installation tips: Use the included lock washers and torque nuts evenly to avoid bending the U‑bolt; if mounting to thin material, add a backing plate to distribute load. For outdoor or coastal installations, confirm the HDG finish meets your corrosion‑resistance needs. Avoid over‑tightening which can deform the pipe or U‑bolt threads.

Square or Round top zinc plated or Hot Dipped Galvanized steel u-bolts are designed for outdoor corrosion resistance. Use for mounting tubing & Square brackets , designed to support most WiFi , PCS, Cellular, and TV antennas. Allows you to vary the mounting pipe length and diameter,
You can increase the amount of strength and holding power by utilizing multiple mounts space out over the length of the mounting pipe. There are many reasons you might need to use these mounts and they mostly involve the need to attach a pole to another pole to either extend the original or simply as an attachment point.

|
Dimensions (inches) |
Assy. Part No. |
Weight (lbs./100pcs) |
|||
|
A |
B |
C |
D |
||
|
1/4 |
1-1/4 |
2-1/4 |
1-3/8 |
JR45GA |
12/100 |
|
5/16 |
1-1/2 |
2-5/8 |
1-1/4 |
JR51A |
15/100 |
|
5/16 |
1-1/2 |
2 |
1-1/4 |
JR55A |
14/100 |
|
5/16 |
1-11/6 |
2-1/4 |
1 |
JR54A |
15/100 |
|
3/8 |
13/16 |
1-5/8 |
7/8 |
JR69A |
21/100 |
|
3/8 |
1 |
2-1/4 |
1-1/4 |
JR67A |
23/100 |
|
3/8 |
1-1/4 |
2-3/4 |
1-5/8 |
JR66A |
31/100 |
|
3/8 |
1-1/2 |
3 |
1-3/4 |
JR65A |
29/100 |
|
3/8 |
2-1/8 |
3 |
1-1/4 |
JR68A |
31/100 |
|
3/8 |
2-1/2 |
4 |
2 |
JR60A |
35/100 |
|
3/8 |
2-1/2 |
3-1/2 |
1-1/2 |
JR61A |
33/100 |
|
3/8 |
3-1/2 |
4-5/8 |
1-5/8 |
JR64A |
41/100 |
|
3/8 |
4 |
6 |
2-1/4 |
JR62A |
42/100 |
|
3/8 |
4-1/2 |
6-1/2 |
2-1/4 |
JR63A |
52/100 |
|
1/2 |
3/4 |
3-1/2 |
2-1/2 |
JR81A |
60/100 |
|
1/2 |
2 |
3-3/4 |
1-3/4 |
JR810A |
63/100 |
|
1/2 |
2-1/4 |
4-1/2 |
2-1/4 |
JR82A |
71/100 |
|
1/2 |
2-1/2 |
4-1/2 |
2-1/2 |
JR83A |
71/100 |
|
1/2 |
3 |
5-5/8 |
3 |
JR84A |
84/100 |
|
1/2 |
3 |
4-1/8 |
1-1/2 |
JR84SA |
73/100 |
|
1/2 |
3-1/2 |
6 |
3 |
JR88A |
88/100 |
|
1/2 |
4 |
6-1/2 |
3-1/2 |
JR89A |
98/100 |
|
1/2 |
4-1/2 |
6 |
2-1/4 |
JR85A |
91/100 |
|
1/2 |
5-5/8 |
8 |
3-1/4 |
JR86A |
114/100 |
|
1/2 |
6-3/4 |
9 |
3-1/4 |
JR87A |
127/100 |
|
1/2 |
8-3/4 |
11-1/8 |
2-1/2 |
JR90SA |
188/100 |
|
1/2 |
10-7/8 |
13 |
2-1/2 |
JR110A |
198/100 |
|
1/2 |
12-7/8 |
15 |
2-1/2 |
JR120A |
243/100 |
|
3/4 |
3 |
5-3/4 |
3 |
JR121A |
199/100 |
|
3/4 |
3-1/2 |
6-1/4 |
2-3/4 |
JR122A |
263/100 |
|
3/4 |
4 |
6-3/4 |
2-1/2 |
JR123A |
284/100 |
|
3/4 |
4-1/2 |
7-1/4 |
2-1/2 |
JR124A |
280/100 |
|
3/4 |
5-5/8 |
8-5/16 |
2-1/2 |
JR125A |
318/100 |
|
3/4 |
6-3/4 |
10 |
3-1/2 |
JR126STA |
390/100 |
|
3/4 |
8-3/4 |
11-3/8 |
2-1/2 |
JR128A |
424/100 |
|
3/4 |
10-7/8 |
13-3/8 |
2-5/8 |
JR1210A |
517/100 |
|
3/4 |
12-3/4 |
15 |
2-1/2 |
JR1212A |
591/100 |