Custom Self-Tapping & Self-Drilling Screws
High-performance thread-cutting fasteners engineered for metal and plastic assemblies. We deliver custom thread profiles with 10-day rapid prototyping to optimize your production line.
Product Introduction
Industry pain points and background
Assembly efficiency is critical in modern manufacturing. Pre-drilling and pre-tapping holes slow down production, require additional tooling, and increase labor costs. Furthermore, mismatched threads in delicate plastics often lead to boss cracking and rejected parts. You need self-tapping and self-drilling fastening solutions that bite directly into substrates to create strong, vibration-resistant mating threads in a single, high-speed operation.
Core Product Details
Guanbiao manufactures ultra-high precision set screws (also known as grub screws) designed for critical fastening, locating, and aligning applications. Using advanced precision thread rolling and CNC machining, we produce screws with flawless thread pitch and strict 0.05mm tolerances. Whether you need cup points for maximum shaft grip, flat points for frequent resetting without marring, or custom dog points for permanent locating in keyways, we deliver custom fastening solutions engineered to lock your most demanding assemblies securely in place.
Key Features
1: Custom Thread Profiles
Engineered specifically for your plastic, metal, or wood substrates
2: Hardened Cutting Points
Fast, clean, and effortless material penetration
3: High Pull-Out Resistance
Deep and secure thread engagement
4: Advanced Case Hardening
Tough core with a hard surface to prevent snapping
5: Feature 5: Specialized Head & Drive Styles
Fully customizable to match your assembly tools
Product Showcase
Material Capabilities
Materials We Work With
Mechanical Testing
Carbon Steel (1022A Case-Hardened for piercing metal); Stainless Steel (304, 316, 410 for high hardness & rust resistance); Alloy Steel; Brass; Aluminum.
Specialized Components
Pre-assembled EPDM or Neoprene sealing washers available for weatherproof outdoor applications.
Material Strategy
Case hardening is strictly controlled to provide a hardened cutting surface while maintaining core ductility to prevent snapping. All materials are RoHS/REACH compliant with full MTC provided.
Surface Finishes
Surface Finishes for Outdoor & Indoor Use
Zinc Plating (Clear/Yellow/Black)
Standard corrosion resistance for indoor electronics and chassis.
Dacromet / Ruspert
Exceptional multi-layer weather resistance for outdoor construction and automotive environments.
Passivation
Maximizes the natural rust resistance of 300-series stainless steel fasteners.
Waxing / Lubrication Coatings
Reduces driving friction and prevents galling during high-speed automated installation.
Technical Capabilities
Manufacturing Capabilities & Tolerances
| Max Part Size | Custom lengths and point styles tailored to your application. |
| Tolerances | Strictly maintained to ± 0.05mm. |
| Capabilities | ○High-Speed Multi-Station Cold Heading + Precision Thread Rolling. |
| MOQ | Flexible / Small-Batch Trial Supported. |
Why Choose Us
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Featured Projects
Typical Self-Tapping Fastening Applications
Project 1
● Project Name: Consumer Electronics Plastic Assembly
● Challenge: ○Client's ABS housings were cracking during assembly due to radial stress.
● Solution: Engineered a custom PT-style thread that reduced radial tension, entirely eliminating the cracking issue.
Project 2
● Project Name: EV Aluminum Battery Enclosures
● Summary: Developed specialized self-drilling screws with Ruspert coating, cutting assembly time by 30% without pre-drilling.
Applications
Consumer Electronics
Automotive & EV
HVAC & Sheet Metal
EV Charging Stations
FAQ
Thread-forming works best for softer thermoplastics, while thread-cutting is ideal for hard, brittle plastics to prevent cracking. We can help you choose the best option.
Standard 304/316 is generally too soft for thick steel. We recommend 410 stainless steel or bi-metal screws with carbon steel cutting points.
Yes. We offer flexible MOQs to help you test different thread profiles before mass production.
Absolutely. We can supply EPDM or neoprene washers for leak-proof outdoor installations.