Value Collection 837371PR Hex Socket Cap Screw 1/2-13 Unc

Product Description

The VALUE COLLECTION 837371PR is a partially threaded hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, fixtures, and structural connections. It features a 1/2-13 UNC thread and a 3-inch length under head, providing substantial grip depth for load-bearing installations. The alloy steel construction is finished with a zinc-plated coating that meets ASTM B695, offering baseline corrosion resistance in indoor and light-duty environments. Drive engagement is through a 3/8-inch hex socket, requiring a hex key or Allen driver for installation. This fastener is commonly installed by millwrights, machinists, maintenance technicians, and mechanical contractors.

The 837371PR is suited for general industrial and mechanical applications where a high-strength, internally driven cap screw is required. Partially threaded shanks are preferred when a smooth bearing surface is needed between mated components or when clamping force must be distributed across an unthreaded shank section. Typical use cases include machine frames, jigs, fixtures, and equipment mounting where precise torque loading is critical.

Key Features

• 1/2-13 UNC thread for broad compatibility with standard inch-series tapped holes
• 3-inch length under head provides sufficient grip for thick stock or stacked assemblies
• Partial threading retains a smooth shank section for shear-load and alignment applications
• Alloy steel construction delivers high tensile and shear strength
• Zinc-plated finish meets ASTM B695 for corrosion protection in dry or light-duty environments
• 3/8-inch hex socket drive allows high-torque installation with standard hex keys or drivers

Compatibility

Designed for use in any standard 1/2-13 UNC tapped hole requiring a socket cap screw with a partially threaded shank and 3/8-inch hex drive.

Installation Notes

Installation is performed with a 3/8-inch hex key or Allen-head driver. Ensure the receiving hole is clean, properly tapped to 1/2-13 UNC, and free of debris before driving. Apply thread lubricant or thread-locking compound as required by the application. Always follow the equipment manufacturer torque specifications and applicable ASME or industrial fastener standards when finalizing torque.