Value Collection 533112P M8 Set Screw Cup Point Alloy Steel

Product Description

The VALUE COLLECTION 533112P is an M8 x 1.25 x 20 mm cup point set screw manufactured from alloy steel to Grade 14.9 (45H). Set screws are headless fasteners that thread fully into a tapped hole and bear directly against a mating surface to lock shafts, collars, pulleys, and similar components in position. This screw uses a 4 mm hex key drive and conforms to DIN 916, the international standard for hexagon socket set screws with cup point geometry. The cup point tip bites into the shaft surface to resist axial and rotational movement under load. Grade 14.9 alloy steel provides high proof and tensile strength suitable for demanding mechanical assemblies.

This set screw is used across a wide range of industrial and mechanical applications including motor shaft collars, gear hubs, couplings, set-collar assemblies, and general-purpose machine components. The metric M8 x 1.25 thread pitch and DIN 916 standard make it compatible with metric-threaded assemblies common in HVAC equipment, pumps, blower assemblies, and light industrial machinery. It is installed by machinists, millwrights, HVAC technicians, and maintenance mechanics wherever a flush or recessed locking fastener is required.

Key Features

• M8 x 1.25 metric thread with 20 mm overall length
• Cup point geometry bites into shaft surface for positive rotational and axial retention
• Grade 14.9 (45H) alloy steel provides high tensile and proof load capacity
• 4 mm hex key drive for access in recessed or confined locations
• Conforms to DIN 916 fastener standard for consistent dimensional accuracy
• Headless design seats fully flush with or below the mating surface

Compatibility

Designed as an OEM-style replacement or service fastener for metric-threaded mechanical assemblies requiring an M8 x 1.25 DIN 916 cup point set screw.

Installation Notes

Installation requires a 4 mm hex key or hex bit driver. Ensure the receiving tapped hole is clean and free of debris before threading the screw in by hand to confirm proper thread engagement. Apply appropriate thread-locking compound if vibration resistance is required per the equipment manufacturer's specifications. Always de-energize and lock out any equipment before servicing components secured by set screws.