Value Collection BT-1428-375-AS Set Screw 1/4-28 X 3/8 in

Product Description

The VALUE COLLECTION BT-1428-375-AS is a 1/4-28 x 3/8 inch set screw with a soft tip point, manufactured from Grade 8 alloy steel with a brass tip insert. Set screws of this type are used to secure a component — such as a pulley, collar, or gear — onto a shaft without a protruding head. The hex socket drive accepts a standard hex key for installation and removal. The brass tip makes contact with the mating shaft surface, reducing the risk of shaft damage while still providing positive holding force. This fastener is suited for mechanical assemblies found in HVAC equipment, motors, blower assemblies, and general mechanical applications.

This set screw is appropriate for residential and commercial mechanical assemblies where shaft-mounted components must be locked in position. The soft brass tip is well-suited for applications where the shaft surface must be protected from scoring or deformation — common in variable-speed motor shafts, fan hubs, and precision drive assemblies. The 1/4-28 thread follows the UNF standard, offering finer thread pitch for improved holding torque in thin or precision-tapped components. Both UNC and UNF thread standards are noted for this part. Installation is performed by trade professionals including HVAC technicians, millwrights, and mechanical contractors.

Key Features

• 1/4-28 thread size with fine thread UNF pitch for increased holding torque
• 3/8 inch thread length provides adequate engagement depth for standard shaft applications
• Grade 8 alloy steel construction delivers high tensile and torsional strength
• Soft brass tip protects shaft surfaces from scoring or galling during installation
• Hex socket (cup-style) drive accepts standard hex keys or Allen wrenches
• Headless design sits flush when fully tightened, eliminating protrusion hazards in rotating assemblies

Compatibility

Designed as an OEM-style replacement or service fastener for mechanical assemblies requiring a 1/4-28 soft tip set screw with a hex drive and brass tip contact point.

Installation Notes

Installation is typically performed by HVAC technicians, millwrights, or mechanical contractors using a calibrated hex key or T-handle driver. Always de-energize and lock out the equipment before servicing any shaft-mounted component. Ensure the tapped hole and mating shaft are clean and free of debris before threading the screw. Do not overtighten, as excessive torque can deform the brass tip and reduce its protective effectiveness.