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Woodworking Nuts And Washers
- Haopai
- Made in Foshan, China
- 2-3days
- 100 pcs month
- 4004180020
- M5,Thickness range: 0.3-0.6mm
Product Advantages and Features
1. Self-locking Function:
The specially designed serrated structure generates elastic deformation to provide continuouslocking force.
2. Anti-loosening Effect:
Capable of resisting strong vibrations and impacts to prevent fastener loosening.
3. Reusable:
Most products can be disassembled and reused multiple times without performance degradation.
4. No Additional Tools Required:
Simple installation without needing special tools or adhesives.
5.Corrosion Resistance:
Available in various materials including stainless steel and carbon steel, offering excellentcorrosion resistance.
Product Technical Parameters
Technical Parameters | Material | 65Mn steel |
Hardness | HRC 40-50 | |
Operating Temperature | -30℃ to +250℃ (short-term exposure up to 300℃) | |
Surface Treatment | Black oxide/Zinc plating | |
Compatible Bolt Grade | Grade 8.8 and above high-strength bolts |
Product Application Scope
Equipment operating in high-frequency vibration and impact load conditions is prone tobolt/nut loosening, compromising precision and safety. The 65Mn double-serrated anti-loosening washer, with its high hardness, strong locking force, and fatigue resistance, isspecifically designed for critical applications in woodworking machinery:
1. Spindle & Tooling Systems
Motor spindle/tool arbor fixation - Prevents vibration-induced loosening of saw bladesmilling cutters, and drill bits during high-speed rotation
Tool clamping devices - Secures tool lock nuts in circular saws, planers, and CNC engravingmachines
Pulley/gearbox assemblies - Eliminates vibration-induced displacement of transmissioncomponents
2.Transmission & Feeding Mechanisms
Chain/belt tensioners- Maintains drive system stability to ensure feeding accuracy
Linear guide fastening - Provides secure fixation for precision saws and edge banders
Feed roller bearing seats - Prevents long-term vibration from loosening bearing bolts
3. Machine Frame & Structural Connections
Frame assembly bolts - Enhances structural rigidity in heavy-duty equipment (e.g. four-sidedplaners, sanders)
Vibration screen/dust extraction systems- Reduces high-frequency vibration impact onjoints
Adjustable components - Prevents operational loosening (e.g., table saw angle adjustmentmechanisms)
4. Motor & Vibration Damping
Motor base fixation - Prevents displacement caused by high-speed motor vibrations
Damping foot bolts - lmproves equipment stability and reduces noise
Product Description
Anti-Loosening Solution | Vibration Resistance | Fatigue Resistance | Recommended Woodworking Applications |
Double-Serrated Anti-Loosening Washer | ★★★★☆ | ★★★★☆ | High-speed spindles, Heavy-duty frames |
Standard Flat Washer | ★ | ★★ | Static connections with low vibration |
Spring Washer | ★★ | ★★ | Light-duty general fastening |
Engineered specifically for high-frequency vibration and heavy-impact conditions in woodworking applications, our double-serrated washers create mechanical interlocking through precision-engineered teeth, effectively solving the loosening issues common with traditional washers during dynamic operations like sawing and milling, ensuring long-term equipment stability.
1. Vibration-Proof Locking Expert
· Serration angle optimized for 2,000-8,000 RPM spindle vibrations, providing 300% better anti-loosening performance versus standard washers
· Proven performance: Zero loosening after 500 continuous operating hours on reciprocating sanders
2. Woodworking-Specific Design
· Unique tooth profile prevents wood chip accumulation
· 65Mn material with heat treatment to HRC 45-50 hardness, withstands intermittent impacts characteristic of woodworking machinery
3. Safety Redundancy Design
· Dual-sided serration maintains >50% locking force even with single-side wear
· Zinc coating ≥8μm protects against moisture and water vapor in wood processing environments
Company Introduction
Haopai Co., Ltd. was established in 2008 and is a comprehensive service enterprise specializing in machinery and accessories for the home industry. We have a specialized and innovative customer center, component assembly workshop, equipment debugging workshop, processing workshop, and warehousing. Our main business includes sales of mechanical parts, equipment upgrades and renovations, equipment maintenance and relocation, customized non-standard equipment, intelligent production line planning, automation support, machine vision, shared cloud warehouses, etc. We provide customers with professional personalized services. After more than ten years of accumulation and development, our elite service team of nearly 200 people has served over 10000 enterprises nationwide. Over the years, we have accumulated more than 200000 non-standard accessory categories, making us the most comprehensive one-stop procurement platform in the industry. We have the most competitive technical renovation team in China, with a total of over 100000 equipment upgrade and renovation projects. Haopai Co., Ltd. has been committed to the great cause of making global machinery and preferred Chinese parts for many years, and is determined to become the preferred brand for comprehensive services of global machinery and parts.


Deeply Cultivating the Industry for More Than Ten Years, Creating an Intelligent Manufacturing Full Chain System for Woodworking Machinery.
After 16 years of industry accumulation, we have always focused on the research and manufacturing of CNC woodworking machinery. We have established a leading full chain production system and specialized team structure, providing one-stop services from research and development to delivery for global customers. It is currently a one-stop procurement platform with a complete range of categories in the industry.
Specialized and Innovative Customer Center



Haopai has been committed to the business philosophy of quality first, integrity-based, and win-win cooperation. We adhere to the business philosophy of ultimate customer experience and efficient operation, and uphold the service spirit of taking non-standard customization, drilling difficulties, and solving difficulties as our own responsibility. We constantly innovate and aspire to become the preferred brand for comprehensive services of global machinery and accessories. We are committed to making the great cause of global machinery and preferred Chinese accessories contribute to the development of national brands and the strength of Haopai people.




Team Style
Professional team, always on standby
The service team is distributed in pre-sales consulting, order management, technical support, and after-sales service positions, with 7 × 12 hours of online response to ensure that your needs are processed in the first time.






Haopai Intelligent Cloud Warehouse, Escorting You
In Order to Solve the Problems of High Procurement Costs, Low Efficiency, Difficult Management, Slow Logistics, And High Stagnant Inventory of Industrial Materials in Factories, Haopai Shared Cloud Warehouse Emerged in 2020. Greater Efforts Will Be Made to Assist Customers in Achieving Zero Capital Occupation, Spare Parts Inventory, And Improving Their Digital Level.




Machining Workshop




Component Assembly Workshop


New Media Center


The Intelligent Dispatching System Established in 2021 Has Achieved Intelligent Personnel Allocation, Real-Time Control of Technical Personnel's Work Status, Mobile Dispatching, Accurate and Effective Arrangement of Various Tasks, Precise Control of Project Costs, Thus Creating a Fast Response, Efficient, And Professional After-Sales Service Team.




Patent Certificates
Cooperative Partner
We Have Served over 10000 Enterprises Nationwide and Have Accumulated over 200000 Non-standard Accessory Categories over the Years, Covering Major Home Furnishing Brands Across the Country.