LONG NUT DXTB225 7/8-14x33x56/7/8-14x33x78

Equal strength matching and high-quality materials: Truck bolts are usually high-strength bolts (such as 8.8 grade, 10.9 grade, 12.9 grade). The matching nut must achieve strict equal strength matching (such as grade 8, grade 10, grade 12) to ensure that the thread of the nut will not trip, slip or crack before the bolt when a huge pre tightening force is applied. Its materials are mostly selected from medium carbon steel and medium carbon alloy steel (such as 35 # steel, 45 # steel, 40Cr, etc.), and undergo strict quenching and tempering heat treatment (quenching+high temperature tempering) to obtain high-strength martensite structure, ensuring that its hardness, toughness, and fatigue strength meet the requirements of extreme working conditions.

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