Square & U Bolts
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.
Bolts Grades
GRADE 325
Is a structural bolt specification covering inch and metric bolt grades. This specification contains 4 inch series bolting grades: A325, F1852, A490, and F2280. These will be addressed in this article. When looking at the mechanical requirements of bolts it appears that a grade A325 and SAE J429 Grade 5 are identical as do the grade A490 and the SAE J429 Grade 8.
This begs the question, “Can an SAE J429 Grade 5 be used when an ASTM F3125 grade A325 is specified?” The answer is definitely not. This is also the case for substituting a Grade 8 when grade A490 is specified, and here are some reasons why:
First, grade A325 and A490 bolts are produced with a heavy hex head configuration which provides a wider bearing surface over which to distribute the load. Grade 5 and 8 bolts are produced to standard hex cap screw configuration and therefore cannot distribute the load as much as is needed for structural applications.
Second, the shank length (non-threaded portion of the body) on the grade A325 and A490 bolts is designed to be greater (shorter thread lengths) than your standard hex bolt or hex cap screw.
Remember, the weakest section of standard carbon steel fasteners is through the threaded region. Minute design changes such as this can create a stronger tensile connection. ASTM F3125/F3125M is a structural bolt specification covering inch and metric bolt grades. This specification contains 4 inch series bolting grades: A325, F1852, A490, and F2280. These will be addressed in this article. When looking at the mechanical requirements of bolts it appears that a grade A325 and SAE J429 Grade 5 are identical as do the grade A490 and the SAE J429 Grade 8.
Grade 5
Alloy steel is a medium carbon zinc plated alloy steel that is heat treated to increase hardness. Grade 5 bolts have three (3) evenly spaced hash marks on the head marking
Threaded Rods
Get hard to find galvanized threaded rods with all the hardware included. Use to replace broken parts or make you own pipe to pipe mount
