Value Collection C39029 Smooth Flange Bolt 3/8-16 Unc

Product Description

The VALUE COLLECTION C39029 is a smooth flange bolt designed for high-strength fastening applications where a wide bearing surface is needed without a separate washer. Sized at 3/8-16 UNC with a 1-3/4 inch length under head and partial threading of 1 inch, this bolt distributes clamping load across a 13/16 inch (0.8125 inch) integrated smooth flange. Manufactured from Grade 8 alloy steel with no finish coating applied, it meets SAE J429 standards for mechanical and chemical properties. It is driven by a standard hex head and is sold uncoated, making it suitable for applications where secondary finishing or coating will be applied on-site.

This bolt is used in mechanical assembly, equipment mounting, and structural fastening across industrial, HVAC, and general trade applications. The partial thread design allows the unthreaded shank to bear shear loads while the flange eliminates the need for a flat washer in most installations. Each package contains 25 bolts with a minimum order quantity of 1 package, making it practical for both service-call replenishment and larger job-site inventory.

Key Features

• Grade 8 alloy steel construction for high tensile and proof load strength
• Smooth integral flange at 13/16 inch diameter distributes clamping load without a separate washer
• Partial threading with 1 inch threaded length and unthreaded shank for shear load applications
• 3/8-16 UNC thread form for broad nut and insert compatibility
• Uncoated finish suitable for secondary coating or plating after installation
• Meets SAE J429 fastener standard for consistent mechanical properties

Compatibility

Designed as a standard UNC fastener for use in any application calling for a 3/8-16 smooth flange bolt with Grade 8 alloy steel strength requirements and SAE J429 compliance.

Installation Notes

Installation should be performed by a qualified mechanic or tradesperson using a standard hex wrench or socket drive sized for 3/8 inch fasteners. Ensure mating threads are clean and free of debris before assembly. Do not overtighten beyond the torque value specified in the equipment manufacturer's service documentation. When replacing existing fasteners, verify thread pitch and grip length against the original hardware before installation.