5 Foot Tripod with Antenna Mast for Sloped or Peak Roof Mount
3S 32809 5 Foot Tripod with Antenna Mast for Sloped or Peak Roof Mount
Tripod and 1.25 inch O.D. Mast conforms to almost any Roof Peak or Slope with installer friendly front facing feet that can accomodate 16-24 inch spacing between the two outer legs leaving the center at half distance. Can be Used with Off-Air HDTV or Wireless Cable and Wireless Internet Antennas. (Pitch Pad Kit, Mounting Hardware Not Included)
Supporting Legs are hinged, 3 feet in length and 1.14 inches in Outside Diameter. Typical rafter spacings are 16 inches center to center and pre-built trusses are 24 inches center to center. Thus allowing for Peak or Pirched roof antenna placement with the standard 5 foot Antenna Mast Height
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 no. 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.
This begs the question, “Can an SAE J429 Grade 5 be used when an ASTM F3125 grade A325 is specified?” The answer is definitely no. This is also the case for substituting a Grade 8 when grade A490 is specified, and the rason is because grade A325 and A490 bolts are produced with a heavy hex head configuration which provides a wider bearing surface to distribute the load over.
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
Hot Dipped Galvanized Treaded Rods are embedded in concrete to support Communication Tower Base anchoring and is also used with galvanized clamps. Treaded Rods are Hot Dipped Galvanizing , is a thick zinc coating offering more corrosion protection for application exposed to the elements .
Zinc Plated threaded rods are used for economical Brackets and Mounts
