ISO 10673 Plain Washer Manufacturer for Screw Assemblies | Small Normal Large Series | Product Grade A | GFM-WCR System
ISO 10673 defines the international standard for captive flat washers used in Sems screw assemblies.
These washers are pre-assembled before thread rolling to ensure permanent retention on the screw shank.
They are specifically optimized for automated assembly systems and high-speed production lines, providing stable positioning and consistent clamping force.
LONGZE Engineered Fastening System is a standardized assembly framework for Sems fastening applications
ISO 10673 Sems Washer Specifications for High-Speed Assembly
Define dimensional and material requirements for automated fastening applications.
LONGZE GLOBAL FASTENERS STANDARDS SYSTEM
Engineering Standard Mapping Layer (ISO โ DIN โ ASME)
SEMS WASHERS (STRUCTURAL FASTENERS)
ISO 10673 โ DIN 6902 โ ASME B18.13
HEX BOLTS (STRUCTURAL FASTENERS)
DIN 933 โ ISO 4017 hex bolt โ ASME B18.2.1
HEX NUTS (STRUCTURAL FASTENERS)
DIN 934 โ ISO 4032 โ ASME B18.2.2
PLAIN WASHERS (STRUCTURAL FASTENERS)
DIN 125 โ ISO 7089 โ ASME B18.21.1
Engineering Reliability Center: Dedicated verification for automated assembly components, ensuring dimensional stability and material integrity for high-speed rolling applications.
| Range | M2 โ M12 |
| Bahan | Steel / SS304 / SS316 |
| Type | S (Narrow) / L (Large) |
| Standards | ISO 10673 / DIN 6902 |
| Hardness | 200 / 300 / 350 HV |
| Zinc Plated | Cr3+ Passivation |
| Zinc Flake | Geomet / Dacromet |
| Black Oxide | Precision Coating |
| Anti-Embrittlement | Baking Process Included |
| Phosphate | Dry-to-Touch Finish |
| Dimensional | CPK > 1.67 |
| Flatness Test | Zero Deformation |
| Hardness | HV Verification |
| Assembly Fit | 100% Pre-Check |
| Material PA | Spectro Analysis |
Part of the LONGZE Engineered Fastening System, designed for automated assembly applications.
๐ ISO 10673 Dimensional Matrix (M2-M12)
Dimension Accuracy Control: This matrix defines the precise tolerances required for ISO 10673 washers to ensure seamless integration with bolts during high-speed rolling and automated assembly processes.
| Nominal Size (d) | M2 | M2.5 | M3 | M3.5 | M4 | M5 | M6 | M8 | M10 | M12 |
|---|---|---|---|---|---|---|---|---|---|---|
| Inner ร (d1 min) | 1.9 | 2.4 | 2.85 | 3.35 | 3.8 | 4.8 | 5.8 | 7.75 | 9.75 | 11.7 |
| Outer ร (d2 max - S) | 4.2 | 5.2 | 6.2 | 7.2 | 8.2 | 10.2 | 12.2 | 16.2 | 20.2 | 24.2 |
| Thickness (s) | 0.4 | 0.5 | 0.5 | 0.6 | 0.8 | 1.0 | 1.2 | 1.6 | 2.0 | 2.5 |
๐ฅ DOWNLOAD OFFICIAL TECHNICAL DATA SHEET (TDS)
๐ก๏ธ LONGZE STRATEGIC RISK MANAGEMENT & RESILIENCE
Supply Chain Security: LONGZE implements a multi-layered risk mitigation strategy, combining rigorous technical protocols with a resilient logistics network to guarantee zero production downtime for our global partners.
- Assembly Risk: Precision shape control prevents jamming in automatic feeders.
- Dimensional Risk: Zero-Acceptance (C=0) sampling plan for critical tolerances.
- Technical Risk: Specialized heat treatment prevents washer splitting during rolling.
- Compliance Risk: Full traceability with EN 10204 3.1 MTC.
- OEM Integration: Direct support for automotive and electronics manufacturing.
- Redundancy: Multiple high-speed stamping lines ensure delivery speed.
- Transparency: Real-time batch status tracking for "Just-in-Time" delivery.
- Global Logistics: Optimized DAP/CIF solutions for industrial zones.
๐จ Bespoke Engineering & Custom Fastening HUB
Advanced R&D Support: Beyond standard ISO/DIN/ASME components, LONGZE provides end-to-end engineering support for non-standard fasteners, translating complex technical drawings into high-precision industrial realities.
Customized Fastening Solutions & Drawing Support
You can send me technical drawings for custom Sems assemblies or washer dimensions, and I will provide you with free technical solutions.
๐ฉ eric@lzfasteners.com๐ผ LONGZE OPERATIONAL EXCELLENCE & COMMITMENT
Service Reliability: We anchor our global reputation on uncompromising quality red-lines and high-efficiency logistics, ensuring that every fastener assembly performs flawlessly on your production line.
Q: What if the washers are inconsistent in automatic assembly?
A: Quality is our red line. Any batch causing assembly failure due to dimensional deviation is subject to 100% replacement.
Q: How do you handle rush orders for assembly lines?
A: We prioritize uptime. Priority air-freight options are available for urgent production requirements.
Longze Engineering Synergy (V-SYSTEM)
V-SYSTEM is an industrial interconnectivity matrix established by Longze, designed to bridge the gap between technical standards and physical products. By integrating data endorsement from the Engineering Center, real-time supply chain response from the Fastener Center, and extreme environment protection testing from the Surface Technology Center, we provide global customers with full-lifecycle technical support from design drawings to final delivery.
Global Operations HUB: Bridging the gap between manufacturing and application. We provide direct access to factory-level engineering expertise, ensuring that technical queries are resolved at the source for maximum project efficiency.
Frequently Asked Questions
Q: What is ISO 10673 washer used for?
A: ISO 10673 flat washers are used in screw and washer assemblies (Sems), mainly for automated assembly lines requiring stable positioning and high-speed installation.
Q: What is the difference between ISO 10673 and DIN 6902?
A: ISO 10673 focuses on pre-assembled washers for Sems applications, while DIN 6902 defines large outer diameter washers used for load distribution.
Q: Can ISO 10673 washers be used in high-speed production?
A: Yes, ISO 10673 washers are specifically designed for high-speed automated assembly processes without deformation or misalignment.
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