Value Collection 201130PR Button Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION 201130PR is a fully threaded button socket cap screw designed for applications requiring a low-profile head with high clamping strength. Manufactured from alloy steel with a black oxide finish, this fastener measures 5/16-18 thread size with a 3/8-inch length under the head. It is driven by a 3/16-inch hex socket and conforms to ANSI/ASME B18.3 and ASTM F835 standards. Hardness is rated at 36-43 HRC, making it suitable for demanding mechanical assemblies. Machinists, millwrights, and maintenance technicians install these screws in metal fabrication, machinery, and equipment manufacturing environments.

This button socket cap screw is well-suited for residential and commercial mechanical assemblies where a rounded, low-clearance head is required to avoid snagging or interference with adjacent components. The UNC thread form and right-hand thread direction make it compatible with standard tapped holes in steel, aluminum, and similar materials. It is commonly used in machine guarding, panel mounting, enclosure assembly, and general industrial fastening applications.

Key Features

• Fully threaded 5/16-18 UNC right-hand thread for reliable engagement in standard tapped holes
• Low-profile button head reduces snagging risk in tight or exposed assemblies
• Alloy steel construction with 36-43 HRC hardness for high tensile strength
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• 3/16-inch hex socket drive for use with standard Allen keys or hex bit drivers
• Meets ANSI/ASME B18.3 and ASTM F835 dimensional and mechanical standards

Compatibility

Designed as a standard UNC fastener compatible with any application requiring a 5/16-18 button socket cap screw conforming to ANSI/ASME B18.3 and ASTM F835 specifications.

Installation Notes

Installation is performed with a 3/16-inch hex key or socket bit driver. Ensure the mating tapped hole is clean and properly sized for a 5/16-18 UNC thread before driving the fastener. Do not exceed the rated hardness limits when selecting mating materials, and avoid using impact drivers without torque control to prevent thread damage or fastener failure.