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Help Center304 Stainless Steel Non-Magnetic Open End Wrench,30mm Opening, 265mm Length
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As a leading manufacturer with over two decades of experience, Cangzhou Dean Safety & Special Tools Co., Ltd proudly presents our 304 Stainless Steel Non-Magnetic Open End Wrench. This tool is engineered for professionals who demand reliability in corrosive, magnetic-sensitive, or explosive environments. With a precise 30mm opening and an optimal 265mm length, it delivers both ample leverage and a perfect fit for standard nut and bolt sizes. Our wrench is not just a tool—it’s a safety solution backed by rigorous quality control and an annual export value exceeding US$100 million.
The core advantage of this wrench lies in its material. 304 stainless steel offers exceptional resistance to rust and chemical attack, while its non-magnetic properties make it indispensable for applications near sensitive electronic equipment or in MRI facilities. The open-end design provides quick engagement and disengagement, ideal for fast-paced maintenance tasks. Below we detail key features and technical specifications to help you evaluate its suitability for your operations.
Key Features & Technical Specifications
| Feature | Specification |
|---|---|
| Material | 304 Stainless Steel (AISI 304) |
| Magnetic Property | Non-magnetic (permeability μ ≤ 1.01) |
| Opening Size | 30 mm (approx. 1-3/16 inch) |
| Overall Length | 265 mm |
| Surface Finish | Bright polished, optional passivation |
| Hardness | HRC 22–28 (after proper heat treatment) |
| Weight (approx.) | 0.35 kg |
| Applicable Standards | ANSI B107.10, DIN 3110 (customizable upon request) |
Detailed Advantages for Your Business
- Corrosion Resistance: 304 stainless steel withstands moisture, acids, and alkalis, making it perfect for marine, chemical, and offshore environments. It outlasts chrome-vanadium tools in wet conditions by 5–10 times.
- Non-Magnetic Safety: With a relative permeability below 1.01, this wrench will not interfere with MRI machines, compasses, or sensitive electronic controls—crucial for hospital, aerospace, and mining applications.
- Anti-Spark Potential: While not classified as true anti-spark (e.g., beryllium copper), 304 stainless steel significantly reduces spark risk compared to carbon steel in flammable atmospheres. For explosive areas, we recommend our dedicated non-sparking options; however, this wrench offers a practical alternative in many lower-risk zones.
- Precision Fit: The 30mm opening is machined to tight tolerances (±0.1 mm), ensuring a snug grip on fasteners and reducing rounding damage. The 265mm length provides optimal torque without excessive bulk.
- Ergonomic Handle: The comfortable grip area is designed to reduce hand fatigue during prolonged use. The polished finish also simplifies cleaning, essential in food and pharmaceutical facilities.
- Customizable Options: We can adjust length, opening size, surface treatment (e.g., electropolishing, color coding), and packaging to meet your OEM requirements.
The manufacturing process at our Cangzhou plant combines precision forging with CNC machining, followed by ultrasonic cleaning and magnetic inspection. Each piece is individually tested for hardness and opening dimensions before packing. With an annual export value exceeding US$100 million and a global customer base spanning North America, Europe, Asia, and Oceania, our tools have earned trust in demanding sectors like petrochemical, mining, and marine engineering.
We invite you to contact us for a quote or sample request. Our experienced team provides technical support, fast lead times (usually 15–30 days for stock items), and flexible shipment from Tianjin, Shanghai, or Ningbo ports. By choosing Cangzhou Dean Safety & Special Tools, you choose reliability and value.
Frequently Asked Questions (FAQ)
-
Q: Is this wrench truly non-magnetic? How is it tested?
A: Yes, the 304 stainless steel we use has a magnetic permeability of ≤1.01, verified by a Gauss meter. Trace amounts of ferrite may be present after cold working, but the tool remains functionally non-magnetic for most applications. -
Q: Can I use this wrench in explosive environments like oil rigs?
A: While 304 stainless steel is not classified as anti-spark (like beryllium copper), it generates far fewer sparks than carbon steel. For ATEX or IECEx zones, we recommend non-sparking tools, but this wrench is suitable for many industrial areas where spark risk is moderate. -
Q: What is the maximum torque I can apply?
A: The 265mm handle can deliver up to approximately 80 N·m of torque safely. Exceeding this may cause permanent deformation. We recommend using a torque wrench for critical fastening. -
Q: Does the wrench come with any surface coating for extra protection?
A: Standard finish is bright polished. We offer optional electropolishing or passivation to enhance corrosion resistance. Custom colors are available upon request. -
Q: Can I get a different opening size or length?
A: Yes, we can customize the opening from 6mm to 50mm and lengths as needed. MOQ may apply for custom sizes. Contact us for details. -
Q: How is the tool packaged for export?
A: Each wrench is wrapped in anti-rust paper and placed in a polybag, then packed in export cartons. We also offer individual blister packaging, tool roll sets, or bulk packing per your request. -
Q: Do you provide a quality guarantee?
A: We stand behind our tools with a 12-month warranty against manufacturing defects. Samples can be provided for pre-order testing. Our quality system is continuously improved based on customer feedback.
With over 20 years of specialization in safety and special tools, Cangzhou Dean has built a reputation for consistency and innovation. Our non-magnetic 304 stainless steel wrench is a testament to that commitment. Place your inquiry today and experience the Dean difference.
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