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Help CenterNon-Magnetic Single Open End Wrench, 304 SS, Surface Passivated, Anti-Rust, 38mm Opening,310m Length
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Since 2001, Cangzhou Dean Safety & Special Tools Co., Ltd has been a trusted manufacturer of premium non-sparking and anti-magnetic tools. Our Non-Magnetic Single Open End Wrench, crafted from high-grade 304 Stainless Steel and surface passivated for enhanced corrosion resistance, is designed for professionals who demand reliability in safety-critical environments. With a 38mm opening and 310mm length, this wrench combines robust anti-rust protection with non-magnetic properties, making it an essential tool for industries where magnetic interference or explosive risk must be avoided. Backed by over two decades of manufacturing expertise and annual exports exceeding US$100 million, we deliver consistent quality that meets global standards.
This wrench is engineered for durability and precision in demanding applications such as oil and gas facilities, chemical plants, marine maintenance, and laboratory settings. The 304 stainless steel material ensures excellent strength while maintaining a fully non-magnetic structure, verified through rigorous testing. Surface passivation treatment creates a protective oxide layer that resists rust and pitting, extending the tool's service life even in humid or corrosive atmospheres. Our single open end design provides quick and secure engagement with fasteners, reducing slippage risk and improving torque transfer.
| Parameter | Specification |
|---|---|
| Material | 304 Stainless Steel (Non-Magnetic) |
| Opening Size | 38 mm (1.5 inches) |
| Length | 310 mm (12.2 inches) |
| Surface Treatment | Passivation (Protective Oxide Layer) |
| Anti-Rust Performance | Excellent (Passes 72-hour salt spray test) |
| Magnetic Permeability | |
| Weight | Approx. 0.6 kg (1.32 lbs) |
| Standards | Compliant with ASME B107.110 / DIN 3110 (equivalent) |
Key Benefits:
- Non-Magnetic Safety: Ideal for environments near MRI machines, magnetic sensors, or explosive atmospheres where magnetic tools could trigger interference or sparks. The 304 SS composition ensures magnetic permeability below 1.005 μ.
- Superior Anti-Rust: Surface passivation creates a chromium-rich oxide layer that prevents oxidation and pitting. This wrench withstands salt spray, humidity, and chemical exposure without degrading.
- Single Open End Design: Streamlined profile allows access to fasteners in tight spaces. The 38mm opening precisely fits M24 nuts and bolts, providing secure engagement without rounding.
- Optimal Length & Leverage: At 310mm, this wrench offers controlled torque for moderate- to heavy-duty fastening tasks. The longer handle reduces required hand force while maintaining user comfort.
- Long Service Life: 304 SS is known for its fatigue resistance and low maintenance. Combined with passivation, this tool retains its appearance and function for years, even under frequent use.
- Versatile Applications: Suitable for shipbuilding, offshore platforms, chemical processing, electronics assembly, and any industry requiring non-magnetic, anti-corrosion tools.
As a manufacturer with over 20 years of experience and annual export value exceeding US$100 million, Cangzhou Dean Safety & Special Tools Co., Ltd is dedicated to providing high-quality safety tools to global markets. We ship from major ports (Tianjin, Shanghai, Ningbo) and serve clients in North America, Europe, Asia, and beyond. Every wrench undergoes strict quality control including dimensional checks, magnetic permeability testing, and salt spray corrosion testing. Our packaging ensures product protection during international transit.
Why Choose Our Non-Magnetic Wrench?
- Factory-direct pricing with consistent volume supply
- Customizable openings and lengths available upon request
- Prompt delivery from stock or short lead times for bulk orders
- Technical support and after-sales service from our engineering team
Invest in reliability – contact us today to request a quote or sample. For personalized solutions, our specialists are ready to assist with your specific application requirements.
Frequently Asked Questions (FAQ)
Q1: Is this wrench truly non-magnetic? How is it verified?
A: Yes, the 304 stainless steel used is austenitic and has a magnetic permeability below 1.005 μ. We test each batch using a Ferrite content meter to confirm non-magnetic properties, and results are available upon request.
Q2: What does “surface passivated” mean? Does it affect the tool’s appearance?
A: Passivation is a chemical process that removes free iron from the surface and forms a thin, invisible chromium oxide layer. It enhances corrosion resistance without altering dimensions or color – the tool retains its bright, metallic finish.
Q3: Can this wrench be used in explosive atmospheres (ATEX/IECEx zones)?
A: While this wrench is non-magnetic and anti-rust, it is not specifically certified as spark-resistant. For explosive environments, we recommend our beryllium copper or aluminum bronze non-sparking tools. Please consult our team for the best solution.
Q4: What is the weight of the 38mm opening wrench?
A: The approximate weight is 0.6 kg (1.32 lbs). The weight may vary slightly due to manufacturing tolerances.
Q5: Do you provide custom sizes or other opening dimensions?
A: Yes, we offer customization for opening sizes from 8mm to 100mm and lengths from 150mm to 600mm. Minimum order quantity may apply. Contact us with your requirements.
Q6: How should I clean and maintain this wrench?
A: Clean with mild soap and water, then dry thoroughly. Avoid abrasive cleaners or steel wool. The passivated layer is self-repairing, but for heavy contamination, a 10% citric acid solution can be used.
Q7: What is the typical lead time for this item?
A: For standard sizes in stock, we ship within 3–5 business days. For bulk orders (100+ pcs), lead time is 15–20 days depending on quantity and finishing requirements.
Q8: Is this wrench suitable for stainless steel fasteners to prevent galling?
A: While 304 SS on 304 SS fasteners can gall, this wrench is passivated which reduces friction. For heavily loaded applications, we recommend using anti-seize compound. Alternatively, consider our chrome-moly steel wrenches for stainless fasteners.
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