90pcs/Box 304 stainless steel hexagon screw cylinder head bolt 12.9

This set includes 90 pieces of precision-machined hexagon socket head bolts made from high-quality 304 stainless steel, providing a strong, rust-resistant fastening solution. Each bolt conforms to Grade 12.9 hardness standards, ensuring high tensile strength and reliability in demanding mechanical environments.

The cylinder head (socket cap) design allows for deep insertion of hex keys or Allen wrenches, ensuring secure installation in confined or recessed spaces. The stainless steel material resists rust and oxidation, making these bolts ideal for both indoor and outdoor applications.

The kit includes a variety of bolt sizes to accommodate different assembly needs, all organized in a durable plastic storage box for convenience and portability.