Value Collection 42909 M4 Set Screw Cup Point Din 916 50-pack

Product Description

The VALUE COLLECTION 42909 is a cup point set screw designed for secure, no-slip fastening in mechanical assemblies where a headless profile is required. Sized at M4 x 0.70 thread pitch with a 4 mm overall length, this screw is manufactured from alloy steel to Grade 14.9 (45H), making it suitable for high-torque, high-stress clamping applications. The hex drive socket accepts a 2 mm hex key for installation. The cup point tip bites into the mating surface to resist rotation and axial movement without the need for a through-hole or protruding fastener head. Each package contains 50 pieces.

This set screw is used in industrial and mechanical maintenance applications where shaft-to-hub locking, collar positioning, or component retention is needed on metric-threaded assemblies. Common install scenarios include motor shafts, drive couplings, adjustment collars, and machine tool fixtures. The DIN 916 standard ensures dimensional consistency with other metric hardware in the same specification class. This package quantity is well suited for shop stock or field service kits requiring multiple fasteners of the same size.

Key Features

• M4 x 0.70 metric thread with 4 mm overall length for compact, flush installation
• Cup point tip provides positive grip on mating shaft or surface without permanent deformation
• Grade 14.9 (45H) alloy steel construction for high clamping force and fatigue resistance
• 2 mm hex key drive conforms to DIN 916 standard for dimensional consistency
• Headless design allows fully recessed installation flush with or below the workpiece surface
• Sold in a 50-piece package to support shop stock and repetitive service tasks

Compatibility

Designed as a DIN 916 metric cup point set screw compatible with M4 x 0.70 threaded bores in mechanical assemblies requiring a headless fastener with hex socket drive.

Installation Notes

Installation is performed with a 2 mm hex key; use of a calibrated torque driver is recommended to avoid stripping the socket or over-stressing the threaded bore. Ensure the mating bore is clean and free of debris before threading the screw. De-energize or lock out any rotating equipment before servicing shaft collars or couplings in accordance with applicable safety procedures. Do not substitute a larger or smaller hex key, as doing so risks rounding the drive socket.