Product description

This Grade 5 steel hex bolt with electrolytic zinc plating offers an excellent combination of strength and corrosion resistance. With a UNF 5/16-inch diameter and a length of 2.1/4 inch, this bolt is suitable for various applications where precision and reliability are required.

Technical specifications

• Standard: DIN 931
• Thread type: Unified National Fine (UNF)
• Material: Steel (Grade 5)
• Surface treatment: Electrolytically zinc-plated
• Diameter: 5/16 inch (7.9 mm)
• Length: 2.1/4 inch (57 mm)
• Wrench size: 1/2 inch (12.7 mm)
• Head height: 5.2 mm
• Thread pitch: 24 threads per inch

Applications

This hex bolt is ideal for:

• Automotive sector: Fastening components where fine thread is required.
• Machine building: Assembly of precision parts.
• Construction: Applications requiring high tensile strength and corrosion resistance.

Benefits

• High strength: Grade 5 steel offers tensile strength comparable to class 8.8.
• Corrosion resistant: The electrolytic zinc plating protects against rust.
• Precision: UNF thread ensures a strong and precise connection.

Installation instructions

For optimal performance:

• Use a wrench with a width of 1/2 inch.
• Ensure the thread is clean and dry before assembly.
• Tighten the bolt according to the recommended torque for Grade 5 bolts.

Compatibility

This bolt is compatible with nuts and other fasteners with UNF 5/16-inch thread, making it versatile for various projects.