Value Collection R88801442 Hex Head Cap Screw 5/16-18

Product Description

The VALUE COLLECTION R88801442 is a 5/16-18 x 3-1/2 inch hex head cap screw manufactured from Grade 316 stainless steel with an uncoated finish. This fastener features a Unified National Coarse (UNC) thread standard and is partially threaded along its 3-1/2 inch length under the head. Grade 316 stainless steel provides strong resistance to corrosion and chemical exposure, making it well suited for demanding environments where standard carbon steel fasteners would degrade. It is installed using a standard hex wrench or socket and is sold individually with a minimum order quantity of 10 pieces.

This hex head cap screw is used across a wide range of trade and industrial applications including HVAC equipment mounting, plumbing system assemblies, marine hardware, pool and spa equipment, and general mechanical fastening where corrosion resistance is required. The 5/16-18 UNC threading and 3-1/2 inch under-head length suit medium-duty structural connections in both indoor and outdoor environments. Partially threaded shanks provide improved clamping force and are commonly used where a smooth shank section is needed to span through a clearance hole before threading into a tapped hole or nut.

Key Features

• Grade 316 stainless steel construction for excellent corrosion and chemical resistance
• 5/16-18 UNC thread for compatibility with standard inch-series tapped holes and nuts
• 3-1/2 inch length under head accommodates medium-depth fastening applications
• Partially threaded shank provides a smooth clamping section for improved joint integrity
• Uncoated finish maintains dimensional accuracy and avoids coating buildup in close-tolerance holes
• Hex head drive allows installation with standard hex wrenches or sockets

Compatibility

Designed as a standard inch-series UNC hex head cap screw suitable for use in any application requiring a 5/16-18 threaded fastener with a 3-1/2 inch under-head length.

Installation Notes

Installation is typically performed by a mechanic, pipefitter, HVAC technician, or plumber using a standard hex wrench, socket, or impact driver. Confirm the mating thread is clean and free of debris before installation. Do not overtighten stainless steel fasteners, as the material is susceptible to galling; apply an appropriate anti-seize compound when working with stainless-to-stainless connections. Follow applicable code requirements for fastener torque and material compatibility in the specific application.