Value Collection 409127BR Set Screw 3/4-10 X 1 in Cup Point

Product Description

The VALUE COLLECTION 409127BR is a 3/4-10 x 1 inch cup point set screw manufactured from Grade 2 alloy steel. Set screws are headless fasteners used to secure a component — such as a pulley, collar, or gear — onto a shaft by applying direct pressure at the point of contact. The cup point design creates a slight indentation in the mating surface, providing positive resistance against rotation and axial movement. This fastener uses a square drive and carries a UNC thread standard, making it a common selection for mechanical assemblies in HVAC equipment, pump systems, and general industrial applications.

This set screw is suited for use in mechanical assemblies where a secure, vibration-resistant fastener is required without a protruding head. Typical applications include shaft collars on blower assemblies, sheaves, couplings, and similar rotating components found in commercial and residential HVAC systems, plumbing equipment, and light industrial machinery. The cup point is appropriate for use against softer shaft materials where a biting grip is needed. Sold individually; minimum order quantity is 10 units.

Key Features

• Cup point tip creates a positive grip on mating shaft surfaces, resisting axial and rotational movement
• Grade 2 alloy steel construction provides adequate hardness for general mechanical fastening duties
• Square drive socket compatible with standard square-drive bits and keys
• UNC (Unified National Coarse) thread standard for broad compatibility with standard threaded holes
• Headless design sits flush or below the surface of the mating component
• Fractional inch sizing: 3/4-10 thread, 1 inch length measured under head

Compatibility

Designed as a standard UNC-thread set screw suitable for use in any threaded hole or coupling accepting a 3/4-10 coarse thread fastener in general mechanical and industrial assemblies.

Installation Notes

Set screws of this size are typically installed by a machinist or mechanical technician using a calibrated square-drive key or bit. Ensure the mating shaft and threaded hole are clean and free of debris before installation. De-energize and lock out any equipment before servicing rotating assemblies. Do not overtighten — thread stripping is the primary failure mode when installing large-diameter set screws into softer housing materials.