Value Collection 40433 Cup Point Set Screw 5/8-11 Grade 8

Product Description

The VALUE COLLECTION 40433 is a cup point set screw designed for shaft-to-hub clamping and positioning applications in mechanical assemblies. Manufactured from Grade 8 alloy steel, this fastener delivers high tensile and torsional strength suited to demanding industrial and maintenance environments. The 5/8-11 UNC thread and 2.5-inch overall length make it appropriate for medium-to-heavy locking tasks. Drive engagement is through a 5/16-inch hex key socket. Each package contains 10 screws. Licensed tradespeople, maintenance mechanics, and millwrights install this type of fastener in production machinery, conveyor systems, and drive shaft assemblies.

Cup point set screws seat directly against a shaft or workpiece surface, creating a localized bite that resists rotational and axial movement. This fastener is suited for use in collars, pulleys, gears, and similar mechanical components where a headless fastener is required to sit flush with or below the surface of the host part. The 5/8-11 UNC thread size is common in heavier-duty industrial equipment. This product ships in a 10-piece package, making it practical for service stock and job-lot quantities.

Key Features

• Cup point geometry provides positive shaft engagement and resistance to loosening under vibration
• Grade 8 alloy steel construction for high tensile and torsional load capacity
• 5/8-11 UNC thread for compatibility with standard inch-series tapped bores
• 5/16-inch hex key drive for installation with standard L-keys or T-handle wrenches
• Headless design allows the fastener to sit flush or below the surface of the mating part
• Conforms to ASME/ANSI B18.3 and ASTM F912 fastener standards

Compatibility

Designed as an OEM-style replacement or service stock fastener for any mechanical assembly requiring a 5/8-11 UNC threaded cup point set screw with a 2.5-inch overall length.

Installation Notes

Installation is performed by licensed mechanics or millwrights using a 5/16-inch hex key. Power down and de-energize all equipment before servicing shaft or hub assemblies. Apply thread-locking compound where vibration is a concern, per the equipment manufacturer's service guidelines. Do not exceed the rated torque specified by the assembly manufacturer for the host component.