Special Specialty Nuts, Bolts & Screws
Special Screws and Nuts (Custom Fasteners / Non-standard Fasteners) refer to custom-engineered hardware components designed to meet unique application criteria. They cannot be purchased off the shelf. Instead, they are tailored to specific industrial designs, spatial constraints, or extreme operational environments (e.g., high vibration, elevated temperatures, and aggressive corrosion). They serve as critical "hidden champions" that ensure structural safety and prevent decoupling in high-end equipment.
At HERTZ PRECISION INDUSTRIAL CO., LTD, we specialize in contract manufacturing non-standard fasteners using multi-station cold heading, thread rolling, and secondary CNC machining. We work directly with client blueprints and CAD models to produce specialty screws, studs, and custom nuts engineered for maximum clamping force and fatigue life.
Engineered for Critical Structural Safety
Multi-Station Cold Heading & Forming
High-speed cold forming that preserves continuous grain flow, creating high-tensile custom bolt heads, step shoulders, and non-standard shank profiles with zero material waste.
Anti-Decoupling & Vibration Lock Fasteners
Specialty nuts and screws engineered with pre-applied thread-locking patches, serrated flanges, or custom prevailing torque threads to eliminate loosening under extreme vibration.
Secondary CNC Turning & Thread Grinding
Precision secondary CNC operations for features that cannot be cold formed alone, including micro-bores, cross-drilled holes, tight-tolerance shoulders, and specialized thread pitches.
Extreme Environment Plating & Coating
Advanced surface protection options including Dacromet, Geomet, zinc-nickel plating, and passivation designed to withstand high temperatures and salt-spray corrosion.
Send Your Custom Fastener Blueprint for a Fast Quote
Share your 2D or 3D technical drawings with our engineering team. We will evaluate your thread pitch, tolerance requirements, and material coating specs to provide a competitive quotation.