Value Collection 711178MSC Flange Bolt 1/2-13 Unc 3 in

Product Description

The VALUE COLLECTION 711178MSC is a smooth flange bolt designed for high-strength fastening applications requiring a wide bearing surface without a separate washer. Built from 170M PSI alloy steel with a bright uncoated finish, this bolt meets ASTM A574 specifications for socket and structural fasteners. The 12-point drive accepts a 1/2-inch drive socket, providing high torque capability in confined spaces. The partially threaded shank — threaded 1-1/4 inches of a 3-inch length under head — allows the unthreaded section to act as a shoulder, improving shear resistance in bolted joints. Machinists, millwrights, and maintenance technicians are the typical installers.

This flange bolt is suited for industrial, mechanical, and structural assembly work where a smooth flange bearing surface is required to distribute clamp load evenly across the mating part. The smooth flange eliminates the need for a flat washer in many applications. Common use cases include equipment mounting, fixture assembly, and machine component fastening in manufacturing and maintenance environments. The 1/2-13 UNC thread is one of the most widely used coarse-thread sizes in inch-based fastening systems, making this bolt compatible with a broad range of standard nuts and tapped holes.

Key Features

• Alloy steel construction rated to 170M PSI tensile strength per ASTM A574
• Smooth flange with 3/4-inch diameter distributes clamping load without a separate washer
• Partially threaded shank — 1-1/4 inches of thread on a 3-inch length under head — improves shear resistance
• 12-point drive head accepts a 1/2-inch drive socket for high-torque installation
• Bright uncoated finish suitable for indoor and controlled-environment use
• 1/2-13 UNC coarse thread for broad compatibility with standard nuts and tapped holes

Compatibility

Designed as a standard inch-series smooth flange bolt compatible with 1/2-13 UNC tapped holes and hex nuts conforming to ASTM and ANSI inch-fastener standards.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a 1/2-inch drive socket or 12-point wrench. De-energize and lock out equipment before fastening or removing bolts from machinery per applicable OSHA lockout/tagout procedures. The bright uncoated finish provides no corrosion protection — avoid use in wet or corrosive environments without additional protective measures. Apply torque values appropriate for the joint material and grade per applicable engineering specifications or fastener torque tables.