Value Collection BT-1428-500-AS Set Screw 1/4-28 X 1/2 in

Product Description

The VALUE COLLECTION BT-1428-500-AS is a 1/4-28 hex-drive set screw with a soft brass tip point, manufactured from Grade 8 alloy steel. Set screws of this type are fully threaded fasteners with no head, designed to seat flush or below a surface to lock a component in place against a shaft or bore. The brass soft tip protects the mating surface from scoring while maintaining firm holding force. This screw measures 1/2 inch in thread length and follows UNC/UNF thread standards. It is a standard industrial fastener installed by machinists, millwrights, and mechanical contractors in assembly and maintenance applications.

This set screw is suited for use in shaft-collar locking, pulley and gear retention, and mechanical stop applications where surface marring must be minimized. The 1/4-28 thread pitch indicates a fine-thread designation appropriate for applications requiring precise torque control and resistance to loosening from vibration. The brass tip deforms slightly under load to conform to the shaft surface, distributing clamping pressure without gouging. Typical environments include light industrial machinery, HVAC blower assemblies, and equipment with precision-machined shafts.

Key Features

• Soft brass tip prevents scoring or marring of mating shaft surfaces
• Grade 8 alloy steel construction provides high tensile and yield strength
• 1/4-28 fine-thread UNF designation for vibration-resistant clamping
• Hex socket drive for use with standard hex keys or Allen wrenches
• Full thread length of 1/2 inch maximizes thread engagement depth
• Meets UNC/UNF thread standard for broad dimensional compatibility

Compatibility

Designed as a standard 1/4-28 UNF soft-tip set screw suitable for any threaded bore or collar accepting a 1/4-28 fine-thread fastener with hex socket drive.

Installation Notes

Installation is performed with a hex key or Allen wrench sized to the socket drive. De-energize and lock out any equipment before servicing assemblies containing set screws. Do not substitute a standard steel-tip set screw for this soft-tip variant where surface protection is specified, as the tip material difference affects holding characteristics. Torque to the assembly manufacturer's specification for the fastener diameter and grade.