UNC Hexagon Set Screws High Tensile Zinc Plated

• Hexagon head fully threaded UNC set screws. 
• Grade 5 strength, which is the USA equivalent of 8.8 high tensile.
• Choice of thread sizes;
• 1/4"UNC x 20tpi.
• 5/16"UNC x 18tpi.
• 3/8"UNC x 16tpi.
• 7/16"UNC x 14tpi.
• 1/2"UNC x 13tpi.
• All screws are fully threaded.
• Bright zinc plated for corrosion resistance.
• Manufactured to BS1768.
• Screw lengths do not include the head.