Value Collection 88546643 Hex Socket Cap Screw 1/4-20

Product Description

The VALUE COLLECTION 88546643 is a 1/4-20 UNC hex socket cap screw designed for fastening applications that require a recessed drive and a secure, low-profile head. The screw features a 3/16-inch hex drive socket and is partially threaded with 1/2 inch of length under the head. Constructed from alloy steel with a black oxide finish, it provides moderate corrosion resistance and a consistent surface hardness suited for mechanical assemblies, fixtures, and equipment maintenance tasks. Machinists, millwrights, and general trade technicians install this type of fastener across a wide range of industrial and mechanical applications.

This screw is used in applications where a flush or recessed head is required and where a standard hex wrench or Allen key provides the necessary torque access. Common install scenarios include machinery frames, brackets, tooling fixtures, and structural assemblies in both residential and light commercial maintenance environments. The 1/4-20 UNC thread pattern is one of the most common unified coarse thread sizes in North American mechanical work, making this screw compatible with a broad range of tapped holes and threaded inserts.

Key Features

• 1/4-20 UNC thread size for broad compatibility with standard tapped holes and threaded inserts
• 3/16-inch hex socket drive for use with standard Allen keys or hex bit drivers
• 1/2-inch length under head for controlled engagement depth in shallow fastening applications
• Partially threaded shank for precise clamping and shear resistance in structural assemblies
• Alloy steel construction for high tensile strength and durability under mechanical load
• Black oxide finish provides moderate corrosion resistance and reduces light reflection in service environments

Compatibility

Designed as a standard 1/4-20 UNC hex socket cap screw for use in any application with a compatible tapped hole or threaded insert accepting unified coarse thread fasteners at this diameter.

Installation Notes

Installation requires a 3/16-inch hex key or Allen driver. Ensure the receiving hole is properly tapped to 1/4-20 UNC specification and free of debris before installation. Do not overtighten, as alloy steel cap screws in blind holes can strip threads or fracture the base material if torque is excessive. Follow applicable mechanical codes and equipment manufacturer guidelines for fastener torque requirements specific to the assembly.