Value Collection 601557BR Set Screw 1-1/4-7x4 Cup Point

Product Description

The VALUE COLLECTION 601557BR is a cup point set screw intended for industrial fastening applications where a headless, flush-mount threaded fastener is required. Manufactured from alloy steel to ASTM F912 and ASME/ANSI B18.3 standards, this screw measures 1-1/4-7 thread size with an overall length of 4 inches. The 5/8-inch hex socket drive accepts a standard hex key for installation and removal. The cup point profile bites into the mating surface to resist rotational and axial movement, making it a reliable choice for shaft collars, couplings, and similar assemblies. This fastener is installed by maintenance technicians, millwrights, and mechanical contractors working with rotating equipment or structural connections.

This set screw is suited for use in shaft-to-hub assemblies, set collar applications, and general mechanical assemblies where a positive hold is needed without a protruding fastener head. The unified coarse thread (UNC) form at 1-1/4-7 provides broad thread engagement across a range of mating materials. The cup point is appropriate where a permanent or semi-permanent indentation on the mating shaft is acceptable. Typical installation environments include industrial machinery, conveyor systems, and equipment drive components where vibration resistance is a priority.

Key Features

• Cup point tip bites into mating shaft to resist slippage under load and vibration
• Alloy steel construction meets ASTM F912 material grade requirements
• Conforms to ASME/ANSI B18.3 dimensional standards for hex socket set screws
• 1-1/4-7 UNC thread for broad compatibility with standard tapped holes
• 5/8-inch hex socket drive for use with standard hex keys or T-handles
• Headless design allows flush or recessed installation in the mating component

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cup point set screw; fits any 1-1/4-7 UNC tapped hole requiring an ASTM F912 alloy steel fastener.

Installation Notes

Installation requires a 5/8-inch hex key or equivalent T-handle driver. Ensure the tapped hole is clean and free of debris before threading the screw in by hand to avoid cross-threading. Torque to the fastener manufacturer or equipment OEM specification for the application. Power down and de-energize any rotating equipment before servicing fasteners on shafts or couplings.