Q: What similarities exist between A325 and A490 bolts?
A: Applications for A325 and A490 Bolts: The two primary application types being using structural steel bolting, which may or may not require galvanization, depending on the project specifications A-325 bolts These are typically found in a UNC thread pattern, used as standard structural fasteners between 1/2 inch and 1½ inch (although people do find them below this range), however an A490 bolt has a slightly larger diameter with similar thread length to find in smaller sizes of less than 5/8 inch. But one is hard material strength grade and the other is soft. Both are quenched and tempered, with Type 1 providing an optional 50 KSI minimum yield strength and Type 3 offering standard reistance to atmospheric corrosion (i.e., weathering).
Q: The difference between Grade 8 bolt and A490 bolts are purpose, head size and the nature in which it is used as defined by standards.
A: Although they possess the same minimum tensile strength of 150,000 psi, ASTM FMattresses SAE Grade 8 are made up of alloy steel and are typically used for general-purpose applications such as heavy equipment and vehicle transmissions as well as similar industrial sectors. while A490 is a structure-specific bolt of ASTM standard. It has stricter control of material, performance and testing with higher guaranteed value on further tensile strength, yield strength and diagonal braces load bearing capacity.It is a safe and reliable product for primary structure uses, capable of achieving high-strength as well as enhancing the stability of steel structures,and saving construction time. They are not accepted as substitutes in structural applications.
