Socket Set Screw with Cup point (DIN916)

Socket Set Screw with Cup Point (DIN916), also known as Cup Point Socket Set Screw, Cup Point Grub Screw, Allen Set Screw, Hex Socket Set Screw with Cup Point or Internal Hex Grub Screw, is a headless threaded fastener with an internal hexagon socket drive and a cup-shaped point at the end. It is commonly used to lock, hold, secure or position one component against another without using a traditional screw head.

Unlike normal cap screws, socket set screws do not have an external head. They are tightened into a threaded hole using an Allen key or hex key. The cup point is one of the most common set screw point styles because the rim of the cup point can bite into the mating surface, helping to provide strong holding power in selected shaft, collar, pulley, gear, sprocket, coupling and machinery applications.

Socket Set Screw with Cup Point (DIN916) is commonly used in machinery, automation equipment, pulleys, gears, collars, sprockets, couplings, hubs, knobs, handles, fixtures, jigs, motors, pumps, gearboxes and industrial maintenance applications. It is suitable for applications where compact fastening, hidden locking, shaft holding or component positioning is required.

Material :

• Steel , Stainless Steel 304 (A2) , Stainless Steel 316 (A4)

Finishing :

• Steel comes in Black Oxide Finishing

Dimensions:

Key Features:

• DIN916 socket set screw with cup point design
• Also known as cup point grub screw, Allen set screw or hex socket set screw with cup point
• Headless design allows the screw to sit inside or below the threaded hole surface
• Internal hexagon socket drive for Allen key / hex key installation
• Cup point helps bite into the mating surface for strong holding in selected applications
• Suitable for shafts, collars, pulleys, gears, sprockets, hubs, knobs, handles and couplings
• Useful for hidden fastening, shaft locking, component positioning and anti-slip holding
• Steel option suitable for general machinery, tooling and industrial fastening applications
• Stainless Steel 304 (A2) option suitable for better corrosion resistance and cleaner appearance
• Stainless Steel 316 (A4) option suitable for selected outdoor, coastal, marine, wet or chemical-prone environments
• Steel comes in Black Oxide Finishing
• Practical for maintenance, repair, replacement, production assembly and project supply

Applications:

Socket Set Screw with Cup Point (DIN916) is commonly used in:

• Shaft locking and component positioning
• Pulley and gear fixing
• Sprocket and collar fastening
• Coupling and hub locking
• Knob, handle and lever fixing
• Jig and fixture positioning
• Machinery assembly and maintenance
• Automation equipment assembly
• Motor, pump and gearbox repair
• CNC machine and production equipment maintenance
• Tooling and precision mechanical assemblies
• Metal fabrication and workshop repair
• Factory maintenance and MRO work
• Replacement of worn or missing grub screws
• General commercial and industrial fastening applications

Common Related Names

Cup Point Socket Set Screw

• A common technical name for a headless socket screw with a cup-shaped point.

Cup Point Grub Screw

• A popular workshop and maintenance name, especially when used to lock parts onto shafts.

Allen Set Screw

• Used because the screw is installed using an Allen key or hex key.

Hex Socket Set Screw with Cup Point

• A more detailed name that describes both the internal hex socket drive and cup point design.

Internal Hex Grub Screw

• A general trade name used for headless socket screws with internal hex drive.

Why Choose Our Socket Set Screw with Cup Point (DIN916)

Choosing the correct Socket Set Screw with Cup Point (DIN916) is important for holding strength, thread fitment, point contact, corrosion resistance, drive engagement and long-term assembly reliability. The screw should match the thread size, thread pitch, length, material, finishing, hex socket size, mating threaded hole, shaft material, tightening torque and working environment.

Steel Socket Set Screw with Cup Point with Black Oxide Finishing is a practical option for general machinery, indoor equipment, pulleys, collars, gears, sprockets, couplings, knobs, handles, jigs, fixtures and industrial maintenance applications. Stainless Steel 304 (A2) Socket Set Screw with Cup Point is suitable when better corrosion resistance, cleaner appearance and stainless steel material compatibility are required. Stainless Steel 316 (A4) Socket Set Screw with Cup Point is suitable for selected outdoor, coastal, marine, wet or higher-corrosion environments where stronger corrosion resistance is needed.

The cup point design is useful because the edge of the cup point can press into the mating surface and improve holding power in selected assemblies. It is commonly selected for shaft-mounted parts, rotating components, collars, hubs and mechanical positioning applications where a firm grip is required.

Compared with cone point set screws, cup point set screws are commonly selected for general holding and shaft locking. Compared with flat point set screws, cup point set screws can provide stronger bite, but they may still leave a mark on the shaft or mating surface. For applications where surface marking must be avoided, a flat point, dog point or nylon-tip screw may be more suitable depending on the design requirement.

DIN916 / ISO 4029 set screws are widely used for replacement and maintenance because many machines and mechanical parts require the correct point style. Users should confirm whether the existing screw is cup point, cone point, flat point or dog point before ordering, because each point style performs differently.

For best performance, the screw should be tightened using the correct Allen key size and suitable torque. For high-speed rotating, high-load, safety-related, vibration-prone or critical machinery assemblies, screw size, thread engagement, point contact, shaft hardness, torque value and joint design should be checked by a qualified person or project specification.

We supply Socket Set Screw with Cup Point (DIN916) for machinery users, factories, maintenance departments, automation machine builders, tooling workshops, mould and die users, jig and fixture makers, equipment manufacturers, metal fabricators, motor repair teams, pump service teams, gearbox service users, workshop users, hardware resellers and industrial customers in Selangor, Kuala Lumpur and across Malaysia, including Klang, Shah Alam, Puchong, Petaling Jaya, Subang, Port Klang, Balakong, Cheras, Kajang, Rawang, Semenyih, Ampang, Banting, Putrajaya, Cyberjaya and Seremban.