ASTM A490 Tension Control Bolts
5/8''~1''
A490 Tension Control Bolts are ultra-high-strength TC bolts with a splined end that snaps off at precise preload. They meet ASTM F3125 Grade A490, offering 150 ksi (1034 MPa) tensile strength. Used in critical steel structures like high-rise buildings and bridges.
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Product Name：ASTM A490 Tension Control Bolts
Our A490 TC Bolt is an ultra-high-strength structural fastener conforming to ASTM F3125 Grade A490, delivering a minimum tensile strength of 150 ksi (1034 MPa) for diameters 1/2"through 1-1/2". The Hexagon head TC bolt features a standard heavy hex head on one end and a splined tip on the other, which shears off precisely when the required preload is achieved during installation using a tension-control wrench. As High Strength Tension Control Bolts, they provide consistent and reliable bolt tension without the need for torque wrenches or turn-of-nut methods, making them ideal for critical steel connections such as high-rise buildings, bridges, heavy industrial plants, and wind towers. Due to their high hardness, these bolts require careful handling and are not recommended for hot-dip galvanizing.
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