Value Collection 215438MSC Carriage Bolt 3/8-16 3/4 in Grade 8

Product Description

The VALUE COLLECTION 215438MSC is a Grade 8 alloy steel carriage bolt with a 3/8-16 UNC thread and 3/4 inch length under head. The square neck beneath the domed head locks into pre-drilled material to prevent rotation during installation, eliminating the need to hold the bolt from the fastener side. Fully threaded along its 3/4 inch shank, this bolt delivers maximum thread engagement for nut retention. The bright, uncoated finish leaves the base alloy steel exposed, making it suitable for dry or interior applications where an uncoated surface is acceptable. Licensed tradespeople and maintenance professionals reach for Grade 8 fasteners when joint integrity under high tensile loads is required.

Carriage bolts in this configuration are used across a wide range of trade and industrial assembly applications including structural wood connections, equipment mounting, and mechanical assemblies where a flush, tamper-resistant head profile is needed. The 3/8-16 thread size is one of the most common fastener sizes in general construction and mechanical maintenance, fitting standard hex nuts and washers stocked at most supply houses. This bolt is appropriate for use in residential framing, light commercial construction, and shop-fabricated assemblies. Minimum order quantity is 10 units per order.

Key Features

• Grade 8 alloy steel construction for high tensile strength under load
• 3/8-16 UNC thread standard ensures compatibility with widely stocked hardware
• Square neck beneath the dome head resists rotation without requiring a wrench on the bolt
• Fully threaded shank provides maximum nut engagement along the entire 3/4 inch length
• Bright uncoated finish for applications where surface coating is not required
• Meets SAE J429 fastener standard for mechanical and physical requirements

Compatibility

Designed for use with standard 3/8-16 UNC hex nuts and washers in inch-measurement fastener applications. Suitable for wood, metal, and composite substrates with pre-drilled clearance holes sized for a 3/8 inch bolt shank.

Installation Notes

Installation is performed by tradespeople and maintenance technicians using standard hand tools. Insert the bolt through the pre-drilled hole so the square neck seats firmly in the material, preventing rotation, then thread a nut and washer onto the exposed end and tighten with a wrench or socket. Do not apply torque directly to the dome head. For structural applications, consult applicable building codes and engineering specifications to confirm the correct fastener grade, size, and torque requirement for the joint.