Value Collection 821767MSC Flange Bolt 1/2-13 Unc 2-1/2 in

Product Description

The VALUE COLLECTION 821767MSC is a smooth flange bolt designed for high-strength fastening applications requiring a wide bearing surface without a separate washer. Built from Grade 8 alloy steel with a phosphate and oil finish, this bolt delivers reliable corrosion resistance and clamping force in demanding mechanical and industrial assemblies. The 1/2-13 UNC thread pattern and 2-1/2 inch length under head make it a standard choice for structural and equipment fastening where precise thread engagement matters. Partial threading leaves a smooth shank section that improves shear resistance in fitted or close-tolerance installations. Licensed tradespeople and assembly technicians working to SAE J429 standards will find this bolt meets specification for critical joint applications.

This bolt is suited for general mechanical assembly, industrial equipment, and structural fastening where a smooth, integrated flange distributes clamp load across the joint face. The 1-5/64 inch (1.0781 inch) flange diameter provides a broad seating surface, reducing the chance of surface damage or pull-through on softer base materials. It is appropriate for use in maintenance, repair, and original equipment manufacturing contexts across a range of industrial and commercial settings where Grade 8 strength is required.

Key Features

• Grade 8 alloy steel construction for high tensile and proof load requirements per SAE J429
• Smooth flange with 1-5/64 inch (1.0781 inch) diameter provides integrated washer-like bearing surface
• Partially threaded shank — 1-1/4 inch thread length on a 2-1/2 inch body — improves shear strength in fitted joints
• 1/2-13 UNC coarse thread for fast engagement and strong pull-out resistance
• Phosphate and oil finish for moderate corrosion protection and consistent installation torque
• Hex drive for standard wrench and socket installation

Compatibility

Designed as an OEM-style and replacement fastener for assemblies specifying 1/2-13 UNC partially threaded smooth flange bolts to SAE J429 Grade 8 standards.

Installation Notes

Installation is performed by qualified mechanical assemblers or maintenance technicians. De-energize and lockout-tagout all equipment before fastener service per applicable safety procedures. Use a calibrated torque wrench and apply Grade 8 torque values appropriate to the joint specification — do not exceed the rated torque for this thread size and grade as listed in the applicable engineering or maintenance documentation. Inspect mating threads for damage or contamination before assembly.