Value Collection C39036 Flange Bolt 1/2-13 Unc 1-3/4 in Grade 8

Product Description

The VALUE COLLECTION C39036 is a smooth flange bolt designed for high-strength fastening applications where a built-in bearing surface is required. Sized at 1/2-13 UNC with a 1-3/4 inch length under head, this partially threaded bolt features a smooth flange measuring 1-5/64 inches (1.0781 inches decimal) in diameter. Manufactured from Grade 8 alloy steel and supplied uncoated, it meets IFI 111 and SAE J429 standards. The hex drive head allows installation with standard hex wrenches or sockets. Licensed trades and mechanical contractors install this type of fastener in structural, mechanical, and equipment mounting applications.

This flange bolt is suited for industrial, commercial, and heavy-duty mechanical assemblies where a flanged bearing surface distributes clamping load without a separate washer. The partial thread configuration provides a smooth shank section for shear-load applications and precise hole alignment. Typical installation scenarios include equipment frames, brackets, machine bases, and structural steel connections. The uncoated finish makes it appropriate for dry interior environments or assemblies that will receive additional surface treatment after installation.

Key Features

• 1/2-13 UNC thread size with 1-3/4 inch length under head
• Partially threaded for shear-load capability and precise alignment
• Smooth flange diameter of 1-5/64 inches (1.0781 inches) eliminates need for a separate washer
• Grade 8 alloy steel construction for high tensile and proof load strength
• Hex drive head compatible with standard sockets and wrenches
• Meets IFI 111 and SAE J429 fastener standards

Compatibility

Designed as an OEM-style and general-purpose replacement flange bolt for assemblies requiring 1/2-13 UNC partially threaded smooth flange fasteners conforming to IFI 111 and SAE J429 specifications.

Installation Notes

Installation is typically performed by licensed millwrights, mechanical contractors, or maintenance technicians. De-energize all equipment and relieve any system pressure before servicing fastened assemblies. Use a calibrated torque wrench appropriate for Grade 8 hardware and follow the torque specifications provided in the equipment service manual or applicable structural standards. Do not mix Grade 8 fasteners with lower-grade nuts or hardware, as mismatched grades compromise joint integrity.