Value Collection 601551BR Cup Point Set Screw 1-1/4-7

Product Description

The VALUE COLLECTION 601551BR is a cup point set screw sized 1-1/4-7 x 2-1/2 inches, manufactured from alloy steel to ASTM F912 and ASME/ANSI B18.3 standards. The cup point tip bites into a shaft or workpiece surface to resist rotation and axial movement without requiring a through-hole. Drive is a 5/8-inch hex socket, requiring a standard hex key or Allen driver. This fastener is suited for mechanical assemblies, shaft collars, couplings, and similar industrial applications where a flush or recessed locking screw is required. Installation is typically performed by machinists, millwrights, or maintenance technicians.

This set screw is used in applications that call for a headless, flush-mount fastener in a tapped hole. Common install scenarios include securing hubs, gears, pulleys, and shaft collars in machinery and industrial equipment. The Unified National Coarse thread form ensures compatibility with standard UNC tapped holes at the 1-1/4-7 designation. Sold individually, making it suitable for single-fastener replacements or low-quantity maintenance jobs.

Key Features

• Cup point tip for firm, reliable grip on mating shaft surfaces
• 1-1/4-7 UNC thread form for compatibility with standard coarse-thread tapped holes
• 2-1/2 inch overall length provides deeper thread engagement in thick hubs or collars
• 5/8-inch hex drive accepts standard hex key tools
• Alloy steel construction meets ASTM F912 material grade requirements
• Conforms to ASME/ANSI B18.3 dimensional standard for socket set screws

Compatibility

Designed as an OEM-style replacement or maintenance fastener for any assembly using a 1-1/4-7 UNC tapped hole requiring a cup point socket set screw per ASME/ANSI B18.3.

Installation Notes

Installation and removal should be performed with a properly sized 5/8-inch hex key to prevent drive socket damage. De-energize and lock out all equipment before servicing any assembly containing this fastener. Do not apply thread-locking compounds unless specified by the equipment manufacturer, as cup point set screws rely on mechanical point pressure for holding force. Torque to the equipment manufacturer's specification for the fastener size and application.