Value Collection BT-440-125-SS Set Screw 4-40 Stainless

Product Description

The VALUE COLLECTION BT-440-125-SS is a 4-40 UNC/UNF threaded set screw measuring 0.125 inches in length, constructed from 18-8 stainless steel with a soft brass tip. The hex drive accepts a standard hex key for installation and adjustment. The brass tip protects delicate mating surfaces from marring or scoring during tightening, making this fastener well-suited for securing components against shafts, rods, or other finished surfaces where surface integrity must be maintained. Installers in HVAC, electrical, plumbing, and light mechanical trades commonly use soft-tip set screws when a firm hold is required without damaging the workpiece.

This set screw is appropriate for light-duty fastening applications in residential and commercial settings where a small-diameter, corrosion-resistant fastener is needed. The 18-8 stainless steel construction provides resistance to rust and oxidation in mildly corrosive or humid environments. Typical uses include securing collars, knobs, pulleys, and small mechanical assemblies. This item is sold individually with a minimum order quantity of 5 units.

Key Features

• Soft brass tip prevents marring or scoring of mating surfaces during tightening
• 18-8 stainless steel body offers corrosion resistance in humid or mildly corrosive environments
• Hex drive accepts standard hex keys for precise torque control
• 4-40 UNC/UNF thread standard ensures broad compatibility with small-diameter threaded applications
• Compact 0.125-inch length suits tight-clearance installations

Compatibility

Designed as a standard 4-40 soft-tip set screw for use in mechanical assemblies requiring a small-diameter, corrosion-resistant fastener with a non-marring tip.

Installation Notes

Install using a correctly sized hex key to avoid stripping the drive. Power down or de-energize any associated equipment before tightening or adjusting set screws on rotating or live components. Do not overtighten, as the brass soft tip can deform under excessive load, reducing holding effectiveness. Follow applicable mechanical codes and manufacturer torque guidance for the assembly being serviced.