DIN 7349 Heavy Duty Washer Specifications
Parameter | Details |
Product Name | DIN7349 Heavy Duty Thick Plain Washer |
Standard | DIN 7349 German Industrial Standard |
Matching Bolt Size | M8-M36 Full Sizes In Stock |
Material | Carbon Steel, Mn Steel, 304/316 Stainless Steel |
Surface Finish | Black Oxide, Hot-dip Galvanized, Electro-galvanized, Dacromet |
Feature | Thickened & Enlarged Size, High Pressure Resistance, Anti-deformation |
Application | Steel Structure, Wind Power, Heavy Machinery, High-pressure Flange |
Quality Control | Dimension Tolerance Test, Flatness Test, Appearance Full Inspection |
Package | Export Carton + Pallet, Neutral Packaging Available |
Supply Capacity | Mass Stock for Standard Sizes, Custom Sizes Acceptable |
Product Core Advantages
Standard Heavy-duty Size, Higher Bearing Capacity
Manufactured strictly in accordance with DIN 7349 heavy-duty standards, with thicker thickness and larger outer diameter than ordinary washers. It perfectly matches high-torque tightening of grade 8.8/10.9/12.9 high-strength bolts, effectively disperses bolt pressure and avoids plate collapse and structural deformation under heavy load.
Adopts precision stamping and leveling process, flat and burr-free surface. It fits closely with flanges and steel plates, ensures uniform stress distribution, prevents local pressure concentration, and protects the base material from damage during long-term operation.
Multiple Anti-corrosion Options for All Scenarios
Black finish is cost-effective for indoor mechanical equipment. Hot-dip galvanized and Dacromet finishes provide excellent salt spray and corrosion resistance, ideal for outdoor wind power, coastal and chemical environments, ensuring long-term stable operation and easy maintenance.
High Fatigue Resistance for Long-term Service
Reinforced manganese steel material improves compression and fatigue resistance. It can withstand alternating stress caused by vibration, wind pressure and temperature changes, maintaining stable performance without deformation or fracture for engineering long-term use.
Production Process
High-quality Material Selection: Pure steel coil without impurities to ensure stable mechanical properties.
Precision Stamping: Strict dimensional tolerance control for accurate assembly.
Precision Leveling: Eliminate warping and bending to ensure flatness.
Deburring & Chamfering: Smooth inner and outer holes to avoid thread damage.
Surface Anti-corrosion Treatment: Custom finishes for different working conditions.
Full Inspection & Sorting: Strict quality screening to guarantee project-grade quality.
Application Industries
New Energy Wind Power: Wind tower flange connection, photovoltaic support heavy-load fastening.
Steel Structure Engineering: Factory steel frames, bridge supports, space truss reinforcement.
Heavy Machinery: Machine tools, generator sets, engineering equipment base fixing.
Chemical & Hydraulic Equipment: High-pressure pipeline flanges and valve body sealing.
Outdoor Infrastructure: Open-air steel structures, billboard base heavy fastening.
Foreign Trade Projects: Supporting DIN standard fasteners for European and American projects.
Why Choose Our DIN7349 Washers
We are a professional manufacturer of standard heavy-duty washers. All DIN7349 thickened washers comply with German industrial standards with complete specifications and sufficient stock. We provide quality inspection reports and customized export solutions, supporting bulk engineering orders and global fastener supporting projects.
For DIN7349 heavy-duty thick washers, custom gasket sizes and complete fastener supporting solutions, please contact us for accurate quotation and technical support.
