Value Collection 601553BR Set Screw 1-1/4-7x3 Cup Point

Product Description

The VALUE COLLECTION 601553BR is a cup point set screw designed for secure, flush-mount fastening applications in mechanical assemblies. Manufactured from alloy steel to ASTM F912 and ASME/ANSI B18.3 standards, this screw features a 1-1/4-7 UNC thread and an overall length of 3 inches. The cup point tip bites into the mating surface to resist rotation and axial movement without the need for a through-hole. Drive engagement is via a 5/8-inch hex key socket. Machinists, millwrights, and maintenance technicians use this type of fastener in shaft collars, pulleys, gears, and similar power-transmission components.

This set screw is suited for industrial, commercial, and trade maintenance applications where a headless fastener is required to lock a component onto a shaft or within a bore. The 1-1/4-7 UNC coarse thread pitch provides strong holding power in steel and cast-iron housings. It is appropriate for use in rotating equipment, conveyor systems, and HVAC fan-shaft assemblies where vibration resistance is needed. Each package contains one screw, making it a practical option for single-unit replacement or low-quantity maintenance work.

Key Features

• Cup point tip for positive bite into shaft or mating surface, resisting axial and rotational movement
• 1-1/4-7 UNC coarse thread for strong engagement in steel and cast-iron housings
• Alloy steel construction meets ASTM F912 material grade requirements
• Conforms to ASME/ANSI B18.3 dimensional standard for hex socket set screws
• 5/8-inch hex key drive for use with standard Allen-type wrenches
• Headless design allows fully flush or recessed installation

Compatibility

Designed as an OEM-style replacement or maintenance-stock set screw for mechanical assemblies requiring a 1-1/4-7 UNC, 3-inch overall length, cup point fastener conforming to ASME/ANSI B18.3.

Installation Notes

Installation is typically performed by millwrights, maintenance mechanics, or HVAC technicians. De-energize and lock out all rotating or powered equipment before servicing any shaft-mounted components. Use a properly sized 5/8-inch hex key or T-handle to drive the screw; do not use an undersized key, as this can round the socket. Ensure mating threads in the hub or collar are clean and free of debris before installation.