Value Collection 151286PR Set Screw 5/16-18 X 3/4 in Flat Point

Product Description

The VALUE COLLECTION 151286PR is a flat point set screw designed for shaft-to-hub locking and positioning applications across industrial and mechanical assemblies. Threaded 5/16-18 UNC and measuring 3/4 inches in overall length, this fastener is manufactured from Grade 8 alloy steel for high tensile strength and resistance to shear loads. A 5/32-inch hex drive accepts a standard hex key for installation in confined or recessed locations. It meets ASME/ANSI B18.3 and ASTM F912 standards, making it a code-compliant choice for maintenance technicians, millwrights, and mechanical assemblers working on rotating equipment.

Flat point set screws are used where minimal surface marring is required on the mating shaft, or where the fastener bears against a flat on the shaft. Common applications include shaft collars, pulleys, sprockets, and gear hubs in light to medium industrial machinery. The UNC thread form is standard across the majority of inch-based mechanical components found in HVAC blower assemblies, pump drive trains, and general plant maintenance applications.

Key Features

• Grade 8 alloy steel construction provides high tensile and proof load ratings for demanding mechanical joints
• Flat point geometry minimizes shaft damage and suits applications with a machined flat on the shaft
• 5/32-inch hex drive compatible with standard hex keys and T-handle hex wrenches
• 5/16-18 UNC thread is widely available and compatible with standard inch-based tapped holes
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and performance standards

Compatibility

Designed as an OEM-style or replacement set screw for any tapped 5/16-18 UNC hole requiring a flat point fastener in shaft collars, pulleys, hubs, or similar mechanical assemblies.

Installation Notes

Installation requires a 5/32-inch hex key or Allen-type driver. Ensure the mating component is de-energized and the shaft is stationary before installing or removing set screws. Verify that the tapped hole is clean and free of debris before threading the fastener. Do not exceed the designed clamp load for the hub or collar material to avoid thread stripping.