Value Collection R40681208 Hex Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION R40681208 is a hex socket cap screw designed for fastening applications that require a compact, recessed drive profile. The 5/16-18 UNC thread and 3.5-inch length under head make it well-suited for assemblies where a standard hex bolt head would interfere with adjacent components. Constructed from 18-8 stainless steel, this cap screw provides solid corrosion resistance in wet or chemically exposed environments. The 1/4-inch hex socket drive accepts a standard Allen key or hex bit driver. Maintenance technicians, millwrights, and fabricators install this type of fastener across a wide range of mechanical and structural assemblies.

This cap screw is used in both light industrial and commercial applications where a flush or semi-flush fastening point is required. Common install scenarios include equipment panels, pump housings, bracket assemblies, and HVAC component mounting where the screw head must sit below or flush with the surrounding surface. The 5/16-18 UNC thread is a coarse-thread designation, making it compatible with standard tapped holes of the same specification in steel, aluminum, and plastic substrates.

Key Features

• 5/16-18 UNC coarse thread for use with standard tapped holes
• 3.5-inch length under head accommodates thicker material stacks
• 18-8 stainless steel construction resists corrosion in wet or outdoor environments
• 1/4-inch hex socket drive accepts Allen keys and hex bit drivers
• Recessed drive profile keeps the fastener head low-profile in the assembly

Compatibility

Designed as a standard replacement or stocking fastener for any assembly using a 5/16-18 UNC tapped hole requiring a hex socket cap screw with a 3.5-inch length under head.

Installation Notes

Install using a 1/4-inch hex Allen key or a hex bit with a torque driver appropriate for 5/16-18 fasteners in the target material. Ensure the mating tapped hole is clean and free of debris before driving the screw. Do not exceed the rated drive engagement depth of the receiving thread. In stainless-to-stainless applications, apply an anti-seize compound to prevent galling during installation.