Overview
This industrial-grade square head bolt and nut kit is engineered for demanding fastening applications where high tensile strength and reliable torque application are critical. Manufactured from Grade 8.8 carbon steel, each component is built to withstand significant stress and load. The black oxide finish offers a foundational layer of corrosion resistance for general industrial environments. The distinctive square head design provides a positive grip for wrenches, making it ideal for situations where a flush or low-clearance fit is required, or where traditional hex heads are not suitable.
Key Features
Constructed from high-strength Grade 8.8 carbon steel
Protective black oxide finish for corrosion resistance 1.77-inch square head design for secure wrenching and low-clearance applications
Includes one matching nut per bolt for immediate assembly Pre-packaged for convenience in a 24-piece kit
Specifications
Material: Carbon Steel Material Grade: 8.8 Thread Size: M30 Bolt Length: 7.09 inches Head Dimensions: 1.77 inches by 1.77 inches Head Height: 0.79 inches Finish: Black Oxide Package Quantity: 24 kits (each kit includes one bolt and one nut)
Applications
Heavy-duty machinery assembly and repair
Structural steel framing and construction
Jig and fixture manufacturing
Agricultural equipment maintenance
Industrial conveyor system fabrication General fabrication in welding and machine shops








