Value Collection 581485PR Hex Socket Cap Screw 3/8-16 Unc

Product Description

The VALUE COLLECTION 581485PR is a 3/8-16 UNC hex socket cap screw designed for high-strength mechanical fastening applications. This partially threaded cap screw measures 8 inches in length under the head and accepts a 5/16-inch hex drive. It is manufactured from alloy steel and finished with a black oxide coating that provides mild corrosion resistance and reduces light reflection. The ASME/ANSI B18.3 and ASTM A574 standards govern its dimensions and mechanical properties, making it a recognized choice for precision and structural assemblies where tensile strength is critical.

This fastener is suited for use in machinery, tooling fixtures, structural frames, and industrial equipment where a recessed socket head is preferred over an external hex configuration. The socket cap profile allows installation in counterbored holes or tight clearance areas where a wrench cannot reach. It is commonly installed by machinists, millwrights, maintenance technicians, and mechanical contractors working in manufacturing, fabrication, and heavy equipment service environments.

Key Features

• 3/8-16 UNC thread size for broad compatibility with standard inch-series tapped holes
• 8-inch length under head provides extended reach for deep or stacked assemblies
• 5/16-inch hex socket drive for use with standard Allen or hex key tools
• Partially threaded shank allows shear load transfer through the unthreaded grip zone
• Alloy steel construction meets ASTM A574 mechanical strength requirements
• Black oxide finish provides mild corrosion protection and a low-glare matte surface

Compatibility

Designed as a standard ASME/ANSI B18.3 inch-series socket cap screw for use in any 3/8-16 UNC tapped hole requiring an 8-inch partially threaded fastener with a 5/16-inch hex drive.

Installation Notes

Installation requires a 5/16-inch hex key or Allen driver; use a calibrated torque wrench when a specific clamp load is required for the assembly. Ensure the mating tapped hole is clean and free of debris before driving the fastener to avoid cross-threading. De-energize or lock out any machinery before replacing fasteners on powered equipment in accordance with applicable OSHA lockout/tagout procedures. Apply thread lubricant or anti-seize only if specified by the equipment manufacturer, as dry torque values and lubricated torque values differ.