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  • A: ASTM A193 Grade B7 fully threaded rods and studs provide high wear resistance, high temperature resistance, and high strength. Made of alloy steel that has been heat treated, they are typically used in high pressure applications, such as valves and pressure vessels in petroleum and chemical equipment.

  • A: The most common steel threaded rod, classified as ASTM A307, is Grade 2 threaded rod made from low carbon steel. The stronger and more heat resistant Grade 5 threaded rod is made of medium carbon steel quenched and tempered. It is classified as ASTM A449.

  • A: Grade B7 provides higher strength than Grade 5 bolts with greater ductility than Grade 8. Grade B7 is an excellent choice when a fastener that is stronger than Grade 5 is needed with better fatigue and toughness than a Grade 8.

  • A: Threaded rod is measured Diameter-Threading x Length. For example, you may find a threaded rod measuring 1/4"-20 x 6ft. The 1/4" is the rod's diameter, the 20 means there are 20 threads per inch of rod, and the 6ft is how long the rod is. Most threaded rod is available in either three-foot or six-foot lengths.

  • A: Threaded rod material types。Threaded rods are available in a wide range of materials, including various grades (4.8, 5.8,6.8 8.8, 10.9 and 12.9) of steel, Alloy steel B7,as well as A2 Stainless Steel and A4 Stainless Steel.

  • A:A307 All Thread Rod, PlatedThe ASTM A307 specification covers carbon steel bolts and studs ranging from 1/4" through 4" diameter. A307 is an economical low carbon material often manufactured using A36 round bar. Dimensional specifications are governed by ASME B18.