ISO 7416 Hardened Structural Washer Specifications
Parameter | Details |
Product Name | ISO 7416 Chamfered Hardened Tempered Structural Washer |
Standard | ISO 7416:1984 International Structural Washer Standard |
Matched Fastener | EN14399 Series, DIN6914 Hex Structural Bolt, Grade 8.8/10.9 Bolt |
Size Range | M12-M36 Full Sizes In Stock, Custom Available |
Hardness Grade | 300HV Hardened & Tempered |
Feature | Outer Chamfer Design, High Compression Resistance, Non-deformation |
Surface Finish | Black Oxide, Hot-dip Galvanized, Passivation |
Application | Steel Structure Workshop, Bridge, Mechanical Support, Overseas Construction |
Quality Control | Hardness Test, Dimension Inspection, Flatness & Appearance Check |
Package | Export Carton + Pallet, Neutral Packaging Supported |
Supply Capacity | Mass Stock, Bulk Order & Custom Processing Available |
Product Core Advantages
Integral Hardened & Tempered Treatment
ISO7416 structural washers adopt integral quenching and tempering process with stable 300HV hardness. It effectively resists high pre-tightening pressure without collapse or plastic deformation, maintains stable node stiffness, and improves anti-slip performance of friction-type steel structure connections.
Precision Chamfer Fit Design
The outer chamfer structure perfectly matches the head of large hex structural bolts, ensuring tight fitting and uniform stress distribution. It avoids jamming and local stress concentration, protecting bolt and steel plate surfaces from crushing damage.
EU Engineering Standard Compliance
Fully compatible with EN14399 HR/HV system bolt assemblies and compliant with Eurocode3 steel structure specifications. Standard dimensions and mechanical properties support strict overseas engineering acceptance, which ordinary washers cannot replace.
Multi-environment Anti-corrosion Solution
Multiple surface treatments meet indoor and outdoor working conditions. Black finish for indoor general use, hot-dip galvanized for outdoor weather resistance, ensuring long-term durability in complex overseas environments.
Production Process
High-quality Carbon Steel Material: Stable mechanical properties for structural engineering.
Precision Stamping Forming: Flat surface, accurate size, no burrs or deformation.
Standard Chamfer Processing: Professional edge chamfer for perfect bolt fitting.
Integral Heat Treatment: Quenching and tempering for stable high hardness.
Custom Anti-corrosion Finish: Multiple surface treatments for different scenarios.
Strict Full Inspection: Size, hardness and appearance full quality control.
Application Industries
European Standard Steel Workshop: Frame and beam connection accessories for overseas steel construction.
Bridge Structural Engineering: Heavy-load node pressure-bearing accessories for bridge steel structures.
Heavy Equipment Support: Matching washers for mechanical steel base pre-tightening connection.
Building Curtain Wall Structure: Supporting fasteners for high-rise steel enclosure systems.
Overseas Infrastructure Project: Special accessories for international standard steel structure projects.
Steel Structure Renovation: Replacement and reinforcement accessories for old structural nodes.
Why Choose Our ISO7416 Structural Washers
We specialize in manufacturing ISO standard structural fasteners. All ISO7416 chamfered hardened washers are produced strictly in accordance with international standards, with stable hardness, accurate dimensions and standardized chamfer structure. Full specifications in stock, perfectly matched with EN14399 steel structure bolt sets. We provide complete test reports and support bulk export orders, delivering high-quality and compliant supporting solutions for global steel structure projects.
Installation Notes
1. Professional Matching Only: Must be used with EN14399 series and Grade 8.8/10.9 structural bolts. Ordinary soft washers are prohibited for high-strength pre-tightening nodes.
2. Standard Assembly: Keep the flat chamfered surface closely fitted with the bolt head or nut, avoid skew and overlapping installation to ensure uniform stress.
3. Standard Torque Construction: Install according to standard pre-tightening torque to avoid overload damage or insufficient anti-slip performance.
4. Dry Storage Protection: Store in dry and sealed environment to prevent rust and surface scratch, ensure flatness and assembly accuracy.
5. Disposable Engineering Parts: Pre-stressed structural washers are not allowed to be reused to avoid fatigue failure and ensure structural safety.
For ISO7416 structural hardened washers, EN standard steel structure fastener sets and customized fastener solutions, please contact us for accurate quotation and professional technical support.
