Value Collection 781252PS Carriage Bolt 5/16-18 4in Ss

Product Description

The VALUE COLLECTION 781252PS is a 5/16-18 UNC carriage bolt with a 4-inch length under head and a square neck drive configuration. Manufactured from 18-8 stainless steel with a bright uncoated finish, this fastener delivers solid corrosion resistance in wet, outdoor, and light chemical environments. The square neck seats into pre-drilled material to prevent rotation during assembly, eliminating the need for a wrench on the bolt head. Tradespeople and fabricators use this bolt where a clean, smooth head profile is required on the visible face of the connection.

This carriage bolt is suited for general construction, light structural assembly, wood-to-metal connections, and equipment mounting applications where corrosion resistance and a flush domed head are priorities. The 5/16-18 UNC thread is a common size in residential and light commercial framing hardware, outdoor furniture, docks, and enclosure panels. Each unit is sold individually with a minimum order quantity of 10 pieces.

Key Features

• 5/16-18 UNC thread for broad fastener-system compatibility
• 4-inch length under head for medium-depth material stacks
• Square neck locks into substrate to resist rotation without tooling on the bolt head
• 18-8 stainless steel construction for corrosion resistance in outdoor and wet service
• Bright uncoated finish — no coating to flake, chip, or interfere with close-tolerance holes

Compatibility

Designed as a standard UNC carriage bolt for use with 5/16-18 nuts and washers in wood, composite, and light-gauge metal assemblies requiring a domed, tool-free head face.

Installation Notes

Installation is typically performed by general tradespeople, carpenters, or equipment assemblers using standard hand tools. Drill or punch the clearance hole to the appropriate diameter to allow the square neck to draw fully into the substrate and seat flush before applying the nut. Tighten the nut from the threaded end using a wrench or socket — do not attempt to drive from the head. Follow applicable structural or mechanical codes for fastener torque and spacing when used in load-bearing connections.