Value Collection 47112 Flange Bolt 1/2-13 Unc 3 in Grade 8

Product Description

The VALUE COLLECTION 47112 is a smooth flange bolt designed for high-strength fastening applications requiring a built-in washer-style bearing surface. It features a 1/2-13 UNC thread size with a 3-inch length under the head and a partially threaded shank with 1-1/4 inches of thread engagement. The integrated smooth flange measures 1-5/64 inches (1.0781 inches) in diameter, distributing clamp load evenly across the mating surface without a separate washer. Manufactured from Grade 8 alloy steel with a zinc yellow dichromate finish, this bolt meets IFI 111 and SAE J429 standards. It is installed using a standard hex drive. Licensed trades and maintenance professionals install this fastener in structural and mechanical assemblies where vibration resistance and high tensile strength are required.

This bolt is suited for use in industrial machinery, heavy equipment, and mechanical assemblies where a smooth flange bearing surface is preferred over a serrated flange. The partially threaded shank provides a full-grip zone in the bolt shank, making it appropriate for applications requiring precise joint clamping without thread engagement through the full fastener length. The zinc yellow dichromate finish provides corrosion resistance in moderate-exposure environments. Minimum order quantity is 25 pieces.

Key Features

• 1/2-13 UNC thread form, partially threaded with 1-1/4 inches of thread length
• 3-inch length under head for adequate shank grip in thick-section assemblies
• Smooth flange diameter of 1-5/64 inches (1.0781 inches) distributes load without a separate washer
• Grade 8 alloy steel construction for high tensile and proof load strength
• Zinc yellow dichromate finish for moderate corrosion resistance
• Meets IFI 111 and SAE J429 fastener standards

Compatibility

Designed as an OEM-style and aftermarket replacement smooth flange bolt for industrial, mechanical, and structural assemblies requiring a 1/2-13 UNC partially threaded hex flange fastener conforming to IFI 111 and SAE J429 standards.

Installation Notes

Install with a standard hex socket or open-end wrench sized for a 1/2-13 UNC hex head fastener. De-energize or lock out any equipment before servicing fastened assemblies per applicable OSHA lockout/tagout procedures. The partially threaded shank requires that thread engagement occur fully within the nut or tapped hole — verify that the grip length matches the joint stack before torquing. Do not substitute a lower-grade fastener in applications engineered for Grade 8 tensile requirements.