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Help CenterNon-Magnetic Striking Open End Wrench, Stainless Steel, 190mm Length, 430g Weight, Non-Sparking
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Cangzhou Dean Safety&Special Tools Co.,Ltd, established in 2001, is a leading manufacturer of specialized hand tools. Our Non-Magnetic Striking Open End Wrench, crafted from premium stainless steel, offers a unique combination of strength, safety, and durability. Designed for demanding environments where sparks or magnetic interference cannot be tolerated, this 190mm/430g tool delivers reliable performance for professionals worldwide. With an annual export value exceeding US$100 Million, our products are trusted across North America, Europe, Asia, and beyond.
Key Features & Technical Specifications
- Non-Magnetic & Non-Sparking: Made from stainless steel that is inherently non-magnetic and tested to be non-sparking – ideal for explosive atmospheres and sensitive electronic equipment.
- Optimal Dimensions: Length of 190mm (7.5 inches) provides sufficient leverage for moderate torque applications, while the 430g weight ensures a balanced feel without excessive fatigue.
- Striking Capability: The open end is reinforced with a striking face, allowing safe use with a hammer or mallet to loosen or tighten stubborn fasteners.
- Corrosion Resistance: Stainless steel construction resists rust and chemical attack, extending tool life in wet or corrosive environments.
- Ergonomic Handle: Smooth, rounded handle design reduces hand strain during prolonged use.
| Parameter | Specification |
| Material | Austenitic Stainless Steel (e.g., 304 or 316L) |
| Length | 190 mm ±2 mm |
| Weight | 430 g ±10 g |
| Open End Size | Customizable (standard sizes: 19mm, 22mm, 24mm, 27mm, 30mm, etc.) |
| Hardness (HRC) | 38–45 HRC (achieved through controlled cold working) |
| Surface Finish | Bead blasted or satin finish (standard); polished available upon request |
| Packaging | Single piece in polybag, bulk in carton; custom branding available |
Why Choose This Wrench?
In industries such as oil & gas, chemical processing, mining, and marine, the risk of ignition from sparks or interference with sensitive instruments is a critical concern. Our Non-Magnetic Striking Open End Wrench is engineered to eliminate these risks. The stainless steel alloy is carefully selected to ensure it remains non-magnetic even after work hardening, and the striking face is designed to dissipate impact energy without generating sparks. Unlike plated carbon steel tools that can chip or corrode, this wrench maintains its integrity over many years of service.
The 190mm length provides an excellent balance between portability and torque capability. With a weight of just 430g, it is light enough for overhead work yet robust enough for heavy-duty fasteners. The open end is precision-machined to ensure a tight fit on hex nuts, reducing the risk of rounding. Additionally, the striking surface is clearly marked, allowing operators to use a mallet confidently without damaging the tool.
Trusted Quality From a Global Manufacturer
As a manufacturer with over 20 years of experience, Cangzhou Dean Safety&Special Tools Co.,Ltd has shipped products to more than 15 countries and regions, with annual exports exceeding US$100 Million. Our factory in Cangzhou, Hebei, China, utilizes advanced forging and machining processes to ensure consistent quality. Every lot is subjected to random magnetic permeability testing and spark resistance verification before shipment. We offer flexible packaging and customization options to meet your specific requirements. Whether you need a single tool for a critical job or a fleet of wrenches for an entire work crew, we are your reliable partner.
Contact us today to request a quote or free sample. We ship from Tianjin, Shanghai, or Ningbo ports with lead times typically within 15–30 days. Custom sizes and engraved branding are available for volume orders.
Frequently Asked Questions (FAQ)
1. Is this wrench truly non-sparking? Can it be used in explosive environments?
Yes, the stainless steel alloy used is specially formulated to be non-sparking under normal striking conditions. However, always follow your industry’s safety guidelines and never strike against hardened steel or concrete. The wrench is suitable for use in Zone 1, 2, 21, 22 explosive atmospheres as a non-sparking tool.
2. What is the non-magnetic property? Will it attract to magnets?
The austenitic stainless steel (typically grade 304 or 316) has very low magnetic permeability (usually
3. Can I use this wrench with a hammer? How hard can I strike?
Yes, the striking face is designed for use with a soft-face hammer or mallet (e.g., brass, nylon, or rubber). Avoid using a steel hammer directly. The rated impact force is sufficient to loosen most seized nuts without damaging the tool. Overstriking may cause deformation over time.
4. What open-end sizes are available? Can I get a custom size?
Standard sizes range from 19mm to 30mm (and inch equivalents). Custom sizes are available upon request for large quantity orders. Minimum order quantity for custom sizes is typically 200 pieces.
5. How does this compare to beryllium copper non-sparking tools?
Beryllium copper tools are also non-sparking and non-magnetic, but they are heavier and more expensive. Our stainless steel wrench offers a lighter weight, excellent corrosion resistance, and lower cost while maintaining the required safety properties. Choose based on your budget and specific environmental conditions (e.g., presence of chlorides may favor stainless steel).
6. What is the warranty and expected lifespan?
We provide a 12-month warranty against manufacturing defects. Under normal industrial use, the tool can last several years. Proper maintenance (cleaning after use, occasional lubrication of pivot points) will extend service life.
7. Do you provide certification or test reports for non-magnetic and non-sparking properties?
Yes, we can provide a Material Test Certificate (including magnetic permeability test results) and a Non-Sparking Test Report upon request. These are available for each production batch.
8. How is the tool packaged for export? Can I have my logo printed?
Standard packaging: individual polybag + barcode sticker, then packed in export cartons (typically 12–24 pieces per carton). Custom packaging (blister pack, custom color box, or plastic case) and laser engraving of your brand are available for MOQ of 500 pieces per size.
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