Value Collection BT-51618-500-SS Set Screw 5/16-18x1/2 Ss

Product Description

The VALUE COLLECTION BT-51618-500-SS is a 5/16-18 x 1/2 inch soft tip set screw manufactured from Grade 18-8 stainless steel with a brass tip insert. Set screws of this type are used to secure rotating components — such as collars, pulleys, gears, and hubs — onto shafts without a protruding head. The soft brass tip grips the shaft surface without scoring or marring it, making this fastener well suited for applications where shaft integrity must be preserved. The hex drive socket accepts a standard hex key for installation and torque application. This fastener is a staple in mechanical and electromechanical assemblies across HVAC equipment, pump systems, and electrical drive components.

This set screw is appropriate for use in light industrial and commercial mechanical assemblies where UNC threading and corrosion-resistant stainless steel are specified. The 18-8 stainless alloy provides good resistance to oxidation and mild corrosive environments, making it suitable for indoor HVAC equipment, pump housings, and similar trade applications. The brass soft tip is particularly useful on hardened or finished shafts where a steel cup point would cause unacceptable surface damage. Technicians working on fan assemblies, motor shafts, and coupling installations will find this fastener a common requirement.

Key Features

• Grade 18-8 stainless steel construction for corrosion resistance in mechanical assemblies
• Soft brass tip protects shaft surfaces from scoring or deformation under load
• Hex drive socket compatible with standard hex keys and hex bit drivers
• UNC thread standard, 5/16-18 thread size for broad mechanical compatibility
• Headless design allows full flush or below-surface installation in tapped holes
• Thread length equals overall fastener length at 1/2 inch — full-thread engagement

Compatibility

Designed as a standard UNC soft tip set screw for use in tapped 5/16-18 holes across mechanical assemblies including shaft collars, shaft couplings, pulleys, and hubs in HVAC, pump, and related trade equipment.

Installation Notes

Installation is performed with a hex key or hex bit driver sized to the socket; confirm the correct key size before applying torque to avoid rounding the socket. De-energize any rotating equipment and lock out the drive source before accessing shaft-mounted components. Ensure the tapped hole is clean and free of debris before threading the fastener to avoid cross-threading the stainless steel. Do not exceed the rated torsional capacity of the 18-8 alloy — overtightening soft tip set screws can shear the tip or distort the brass insert.