High-strength hex socket bolt Unbrako
High-strength hex socket bolt Unbrako
Optimal for specifications requiring high strength and high tension Robust hex socket bolts that can withstand high tightening torque 【Features】 ○ By shaving off the pre-formed high top portion, the chamfered area is eliminated, allowing for a deeper engagement with the wrench, enabling a higher tightening torque. ○ The neck fillet section adopts a composite R known as an elliptical fillet, reducing stress concentration, possessing four times the strength of standard products, and preventing neck breakage accidents. ○ The bottom of the screw valley is raised by approximately 17%, increasing the valley R to enhance durability. ○ The head is molded in two stages. By maximizing the seating surface area, the tightening force is effectively transmitted to the counterpart material, ensuring thorough consideration against seating surface collapse. ○ Thanks to advanced heat treatment technology developed through the design and mass production of aerospace screws, it guarantees a strength of 130-140 kgf/mm² while also ensuring a 9% elongation rate.
- Company：PCCディストリビューション・ジャパン
- Price：Other
