Value Collection 93311 Carriage Bolt 5/16-18 1 in Square Neck

Product Description

The VALUE COLLECTION 93311 is a 5/16-18 UNC carriage bolt with a 1-inch length under head and a square neck. The square neck seats into the workpiece to prevent rotation during nut tightening, eliminating the need for a wrench on the bolt head. Constructed from 18-8 stainless steel with a bright, uncoated finish, this fastener resists corrosion in wet and mildly corrosive environments. It suits structural and mechanical assembly work across a wide range of trade applications, including HVAC equipment mounting, plumbing fixture installation, electrical enclosure assembly, and general fabrication where corrosion resistance is a priority.

This carriage bolt is suited for through-bolt applications in wood, metal, and composite materials where a flush, smooth domed head is required on the face side. The 5/16-18 UNC thread is a standard inch-series coarse thread, compatible with standard 5/16-18 hex nuts and washers. Minimum order quantity is 25 pieces, making this appropriate for shop stock, service van supply, or small project quantities. Installations in outdoor, damp, or poolside environments benefit from the 18-8 stainless steel construction.

Key Features

• 5/16-18 UNC coarse thread for compatibility with standard inch-series hardware
• Square neck under the domed head locks the bolt against rotation during assembly
• 18-8 stainless steel construction provides corrosion resistance in wet and mildly chemical environments
• Bright, uncoated finish — no plating to chip or delaminate over time
• 1-inch length under head suits standard panel and structural through-bolt applications
• Inch measurement system; Length Measurement Type is Length Under Head

Compatibility

Designed for use with standard 5/16-18 UNC hex nuts and flat washers in inch-series fastener applications across HVAC, plumbing, electrical, and general mechanical assembly.

Installation Notes

Installation requires drilling a clearance hole sized to accept the square neck, allowing it to seat flush and resist rotation. A standard open-end or socket wrench on the mating nut is all that is needed to drive the assembly. Power down or de-energize any equipment before fastening near electrical components. Follow applicable codes for structural fastener requirements in the specific trade application.