Materials Difference
High-strength fish bolts, designed for superior load-bearing capabilities, differ significantly from ordinary fish bolts, typically made of Q235 (A3) steel. The former employs high-strength materials like 45 steel, 40 boron steel, and 20 manganese titanium boron steel, while the latter relies on Q235 steel.
Application
High-strength fish bolts, with grades like 8.8s and 10.9s, apply pretension and friction for force transmission, unlike common fish bolts that utilize shear resistance. Notably, high-strength fish bolts, intended for permanent connections, cannot be reused, whereas ordinary fish bolts can. The advantages of high-strength fish bolts include simple construction, excellent mechanical performance, removability, fatigue resistance, and stability under dynamic loads. They are pre-stressed using a specialized wrench to apply controlled pre-tension. This overview aims to enhance understanding and guide users in distinguishing high-strength fish bolts from ordinary counterparts.
