Anti-Loosening Fastener Manufacturer|Serrated / Pre-Applied Adhesive / Nylon Patch — Full Range
YF ZCJ is a source factory for anti-loosening screws: serrated-head locking, pre-applied adhesive (chemical locking), nylon patch (Nylok physical rebound), combined flange screws and conical locking washers — 21 products covering the physical, chemical and structural locking routes against vibration, impact and thermal cycling.
Why Choose YF ZCJ Anti-Loosening Fasteners
Serrated locking
Teeth bite into the mating face for reverse resistance, re-usable many times
Pre-applied adhesive
P85 and similar locking compound cured on the thread — permanent chemical lock
Nylon patch
Pre-applied nylon gives damping torque through compression rebound
Combined flange
Pan head, flange and spring washer assemblies cut assembly time
Washer solutions
Conical, double-layer and double-sided toothed washers for different conditions
Automotive validation
Shaker-rig and torque-decay testing, data shipped with the parts
Anti-Loosening Product Series
Serrated locking
Re-usableFlange serrations or double-sided teeth, mechanical interlock
View products ↓Adhesive locking
ChemicalP85 and nylon-patch pre-applied, stable torque
View products ↓Combined assemblies
Faster assemblyTorx flange assemblies and combination screws
View products ↓Locking washers
Washer routeNFE conical, double-layer and splined nylon washers
View products ↓Anti-Loosening Products (12 models)
Integrated Anti-Loosening & Anti-Settlement Nut
Featuring an integrated assembly structure with an oversized bearing flange, this design significantly reduces unit pressure and effectively inhibits substrate embedment ...
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Torx Drive Anti-Loosening Screws with Nylon Patch
Our Torx drive anti-loosening screws are manufactured from premium alloy steel using advanced cold-heading technology. These fasteners feature a pre-applied nylon patch ...
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Compact Torx Cylinder Head Assembly Screw with Pre-Applied A
Compact Torx Cylinder Head Assembly Screw with Pre-Applied Adhesive delivers zero loosening in 10G vibration (ISO 10664 Class A) and sub-0.01mm positional stability for ...
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Torx Dual-Component Screw with Integrated Vibration Lock
Torx Dual-Component Screw with Integrated Vibration Lock Zero-loosening fastening for precision-critical assemblies where 0.01mm shift = system failure. Torx Drive ...
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Hex Flange Serration Screw with Dual-Lock Vibration Proofing
Hex Flange Serration Screw with Dual-Lock Vibration Proofing Engineered for 100% fastener retention in 15G+ vibration environments—where loosening = catastrophic system ...
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0.6mm CM Ultra-Thin Head Serrated Anti-Loosening Micro Screw
0.6mm Ultra-Thin Head Serrated Anti-Loosening Micro Screws feature an ultra-low profile head design that drastically reduces assembly height and maximizes internal ...
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Spline Nylon Washer
Spline Nylon Washers are molded from high-performance toughened nylon using precision injection molding. The internal spline structure ensures synchronized rotation and ...
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Double-Sided Serrated Conical Washer
Double-Sided Serrated Conical Washers feature a high-elasticity spring steel construction with a conical design, incorporating radial serrations on both sides that bite ...
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Wedge-Lock Dual-Layer Washer
Wedge-Lock Dual-Layer Washers are manufactured from high-hardness alloy steel and feature a unique internal and external serrated design. Utilizing the principle of ...
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Multifunctional Sealing & Anti-Loosening Screw
Multifunctional Sealing & Anti-Loosening Screws feature a high-strength core integrated with high-performance sealing elements beneath the head. Upon tightening, the ...
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Hexalobular Socket Head P85 Anti-Loosening Screw
Hexalobular Socket Head P85 Anti-Loosening Screws are engineered from high-strength alloy steel with a professional-grade P85 chemical adhesive pre-applied to the ...
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Ultra-Thin Self-Clinching Nut
Ultra-Thin Self-Clinching Nuts are specifically developed for ultra-thin sheet metals, utilizing a precision clinching process to achieve a powerful mechanical bond. ...
DetailsAnti-Loosening Selection Guide
1. By re-usability
For repeated maintenance choose serrated or nylon-patch (removable); for permanent locking choose P85 pre-applied adhesive, whose removal needs heat or a new part.
2. By vibration severity
Under heavy vibration, combine a structural lock (serrated / flange) with adhesive for double insurance.
3. By space limits
In thin-wall, tight spaces use ultra-low-head locking screws with ultra-thin clinch nuts.
4. By temperature
Nylon patch is temperature-limited (about 120 °C); above that use metal serrations or high-temperature locking adhesive.
5. Torque management
Locking features change the tightening curve — assemble to the recommended torque to keep clamping force consistent.
Typical Applications
New energy vehicles
Motor, controller and battery-pack vibration points
Rail transit
Equipment-cabinet fastening under vibration
Construction machinery
Diesel engines and hydraulics under high-frequency vibration
Outdoor equipment
Wind turbines and PV mounting under wind-induced vibration
Appliance motors
Washing machines and compressor vibration sources
Precision instruments
Transport vibration protection and micro-displacement control
Anti-Loosening FAQ
Q1Serrated or adhesive locking — which is better?
Neither is universally better: serrated locking is re-usable and heat-resistant; pre-applied adhesive locks harder but is essentially single-use. For heavy vibration with maintenance access, use both.
Q2What is the temperature limit of a nylon patch?
Standard Nylok patches work from about -40 to 120 °C; beyond that choose serrated locking or high-temperature locking adhesive.
Q3Can locking screws be re-used?
Serrated and flange types can; P85 pre-applied adhesive is destroyed on removal and needs re-coating or replacement.
Q4Do locking features change tightening torque?
Yes — they add drive resistance, so assemble to the recommended torque to reach the designed clamp load. A torque reference table is available.
Q5What does a combination screw include?
Typically screw, spring washer and flat washer (or flange), removing on-line washer assembly, improving efficiency and preventing missing washers.
Q6Is there test data for locking performance?
We can provide transverse vibration (Junker) and torque-decay reports so selection can be data-based.
Need the full catalog or custom anti-loosening parts to drawing?
Send specifications, drawings or application details for selection advice, test reports and a fast quote — direct to our sales lead.
