Today, We will introduce the classification of high strength bolts.
According to the stress state, high strength bolts can be divided into friction type and pressure bearing type.
In fact, there are differences in design and calculation methods. The ultimate bearing capacity of friction type high-strength bolts is the sliding between plates; The bearing capacity limit state of high strength bolt is the failure of connection, and the normal service limit state is the sliding between plates.
Classification of High Strength Bolts
According to the construction technology, high strength bolts are divided into torsional shear high strength bolts and large hexagon high strength bolts
The large hexagon high-strength bolt belongs to the high-strength grade of ordinary screw, while the torsional shear high-strength bolt is an improved type of large hexagon high-strength bolt for better construction. The construction of high-strength bolts must be first tightened before final tightening, and the initial tightening of high-strength bolts needs impact electric wrench or torque adjustable electric wrench; The final tightening of high-strength bolts has strict requirements. The final tightening of high-strength bolts must use the torque electric wrench, and the final tightening of high-strength bolts must use the torque electric wrench.
High Strength A325m Hex Structural Bolt Standard: DIN, ASTM/ANSI JIS EN ISO, AS, GB Material: Stainless Steel: SS201, SS303, SS304, SS316, SS316L, SS904L, F593 Steel Grade: DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9; SAE: Gr.2,5,8; ASTM: 307A, 307B, A325, A394, A490, A449, Finishing: Zinc (Yellow,White,Blue,Black), Hop Dip Galvanized(HDG), Black Oxide, Geomet, Dacroment, anodization, Nickel plated, Zinc-Nickel plated Production Process: M2-M24: Cold Froging, M24-M100 Hot Forging, Machining […]