Product Parameter Specifications
Parameter | Details |
Product Name | DIN 916 Hex Socket Set Screw (Cup Point) |
Standard | DIN 916 |
Material | Carbon steel, alloy steel, 304/316 stainless steel |
Strength Grade | Grade 4.8, 8.8, 12.9 optional |
Size Range | M3-M20 full sizes in stock, customized sizes available |
Surface Finish | Black oxide, zinc plated, plain polishing, anti-rust treatment |
Structure Feature | Headless design, hex socket drive, cup concave end, non-damage shaft positioning |
Core Function | Shaft anti-rotation positioning, parts limit fixing, tooling fine locking |
Applications | Transmission shafts, hub components, precision equipment, tooling fixtures |
Quality Control | Full inspection of dimension, hardness, thread tolerance and appearance |
Supply Capacity | Sufficient stock for standard sizes, bulk orders and customization supported |
Core Product Advantages
Stable Anti-rotation Positioning With Cup Point Bite
The professional cup-shaped concave end fits perfectly with shaft dimples, forming a stable bite limit structure. It can effectively prevent relative rotation between shafts and matching parts under conventional operation and slight vibration conditions, maintaining stable assembly position and meeting daily mechanical positioning requirements.
Shaft Surface Protection Without Damage
Different from pointed or flat-point set screws, the cup-end design fits inside shaft dimples without scratching or squeezing the smooth outer circle of precision shafts. It effectively protects high-precision parts such as transmission shafts and hubs and reduces wear and deformation risks.
Hidden Headless Design For Narrow Spaces
The integral headless structure can be completely embedded inside workpieces without protruding parts, occupying no extra space. It is suitable for precision equipment and tooling fixtures with compact and limited assembly structures.
Hex Socket Drive For Easy Assembly
Standard hex socket design matches common hex wrenches, with uniform stress and non-slip performance. It facilitates disassembly, assembly and fine adjustment during equipment maintenance and tooling debugging, improving overall working efficiency.
Diversified Options For Wide Adaptability
Multiple materials and strength grades are available with diverse surface treatments. The product can adapt to conventional normal temperature working conditions, slightly corrosive humid environments and high-precision heavy-duty positioning scenarios, delivering excellent versatility.
Production Process
Material Selection: High-quality carbon steel, alloy steel and stainless steel with stable mechanical properties for precision forming and heat treatment.
Precision Cold Heading: One-piece cold heading forming ensures standard thread, regular hex socket and uniform cup radian without burrs or deformation.
Precision Thread Rolling: High-precision rolling process forms full and standard threads that pass standard gauge inspection for smooth matching assembly.
Heat Treatment Strengthening: High-strength models adopt quenching and tempering treatment to balance hardness and toughness and improve fatigue resistance.
Surface Anti-corrosion Treatment: Black oxide, zinc plating and other treatments enhance rust and corrosion resistance for different application environments.
Final Inspection & Sorting: Strict batch inspection of dimension, thread accuracy, hardness and appearance to stabilize batch quality.
Application Industries
Transmission Machinery: Positioning and anti-rotation for transmission shafts, rotating shafts and gear components to avoid operational deviation and loosening.
Hub Assembly: Limit fixing of mechanical hubs and wheel discs to ensure assembly accuracy and operational stability.
Tooling & Fixture: Auxiliary positioning of precision tooling, jigs and molds for repeated debugging and assembly scenarios.
Precision Instrument Equipment: Limit locking of internal components of miniature precision machinery and automation equipment for compact structural assembly.
General Machinery Manufacturing: Positioning, fine adjustment and anti-loosening matching for various general mechanical parts.
Why Choose Our DIN 916 Set Screws
We specialize in manufacturing DIN 916 hex socket cup point set screws in strict accordance with German standards. Our products feature accurate dimensions, regular threads and uniform cup end forming with stable batch consistency. Customized products of different materials, strength grades and surface treatments are available. Sufficient stock supports fast bulk delivery, and complete material and mechanical test reports can be provided. Our products serve precision machinery, transmission equipment and tooling fixture projects worldwide, providing stable and cost-effective precision positioning fastening solutions.
Installation & Usage Notes
1. Match with shaft dimples: It must be used with pre-machined shaft positioning dimples to ensure full bite and effective limit, avoiding positioning failure caused by excessive assembly gap.
2. Control tightening torque: Adjust tightening force according to product specifications and working conditions. Excessive torque may cause thread slipping or screw fracture, while insufficient torque leads to loose locking.
3. Reasonable model selection: Choose high-strength alloy steel for heavy-load and high-vibration scenarios, and stainless steel for humid and corrosive environments to extend service life.
4. Keep assembly clean: Remove iron scraps, oil and impurities from threaded holes and positioning dimples before installation to ensure tight fitting and stable positioning.
5. Regular maintenance inspection: Check the locking state regularly for long-term vibrating equipment and replace worn parts timely to avoid component positioning deviation.
For high-quality DIN 916 cup point set screws and customized fastener solutions, please contact us for professional quotations and technical support.
