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Help CenterAnti-Magnetic Construction Box Wrench, Single End Ring Spanner, Ring Podger Spanner, 304 Stainless Steel
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Cangzhou Dean Safety&Special Tools Co., Ltd – a professional manufacturer since 2001 with an annual export value exceeding US$100 Million – proudly presents our Anti-Magnetic Construction Box Wrench, also known as Single End Ring Spanner or Ring Podger Spanner. This tool is crafted from premium 304 Stainless Steel to deliver exceptional corrosion resistance and non-magnetic performance. Designed for demanding construction and industrial environments where magnetic interference must be avoided, this wrench combines the reliability of a box-end design with the utility of a tapered podger end for aligning bolt holes. With over two decades of manufacturing excellence, we ensure every tool meets rigorous quality standards, making it a trusted choice for professionals worldwide.
The Anti-Magnetic Box Wrench is engineered to provide superior grip and torque transmission while remaining completely non-magnetic – a critical requirement in industries such as electronics assembly, MRI facilities, oil & gas, and explosive atmospheres. The 304 stainless steel construction guarantees resistance to rust and chemical corrosion, even in harsh outdoor or marine conditions. Each wrench is manufactured with precision forging and heat treatment to achieve optimal hardness and durability, ensuring long service life even under heavy-duty use.
Key Features & Technical Specifications
- Non-Magnetic Performance: Made entirely from 304 stainless steel, this wrench has a relative magnetic permeability of ≤1.05, making it safe for use near sensitive electronic equipment, MRI machines, and in environments where sparks from magnetic tools are a hazard.
- Single End Ring Design: The 12-point or 6-point box end ensures a secure grip on hex nuts and bolts, reducing the risk of rounding corners. The closed head prevents spreading under high torque.
- Podger/Construction Function: The long, tapered handle serves as a podger (alignment drift) for aligning bolt holes during structural assembly, saving time and eliminating the need for separate tools.
- Corrosion & Chemical Resistance: 304 stainless steel withstands moisture, saltwater, and many industrial chemicals, ideal for shipbuilding, offshore platforms, and chemical plants.
- Ergonomic Handle: Smooth, polished grip with no sharp edges reduces hand fatigue during prolonged use.
- Customizable Sizes: Available in a wide range of metric and imperial sizes (from 6mm to 50mm or 1/4" to 2"). Custom lengths and markings are available upon request.
| Parameter | Value |
|---|---|
| Material | 304 Stainless Steel (AISI 304) |
| Hardness (Rockwell B) | 80-90 HRB (Approx. 20-30 HRC) |
| Magnetic Permeability | ≤1.05 μr |
| Standard Size Range (Metric) | 8mm – 46mm (custom up to 50mm) |
| Standard Size Range (Imperial) | 5/16" – 1-1/2" (custom up to 2") |
| Finish | Bright polished or matte passivated (optional) |
| Weight (approx. for 24mm) | 0.35 kg (varies by size) |
Benefits for End Users:
- Safety in Hazardous Areas: Non-magnetic and non-sparking properties make it suitable for use in explosive environments (e.g., oil refineries, gas plants).
- Reduced Tool Inventory: Combines a wrench and a podger in one tool, reducing the number of tools required on site.
- Long Service Life: 304 stainless steel resists rust and deformation, outperforming chrome-plated carbon steel wrenches in corrosive environments.
- Professional Grade: Precision-manufactured to tight tolerances (±0.1mm on the opening) for a secure fit on fasteners.
- Global Standards: Meets international dimensional standards such as DIN 3110 / ISO 3318 for box wrenches.
Trust & Experience – Why Choose Cangzhou Dean?
As one of China’s leading manufacturers of special tools, Cangzhou Dean Safety&Special Tools Co., Ltd has been supplying premium stainless steel tools since 2001. Our annual export value of over US$100 Million reflects the trust placed in us by customers across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and many other regions. All our products are shipped from major ports: Tianjin, Shanghai, and Ningbo, ensuring fast and reliable logistics. We offer customizable sizes, laser engraving, and OEM/ODM services. Each anti-magnetic wrench undergoes rigorous quality checks, including dimensional inspection and magnetic permeability testing. With a dedicated R&D team and a capacity to deliver large orders on time, we are your reliable partner for professional-grade tools. Contact us today for a quote or to request free samples!
Frequently Asked Questions (FAQ)
Q1: How does the anti-magnetic property work? Is it completely non-magnetic?
A1: The wrench is made from 304 stainless steel, which in its annealed condition has a very low magnetic permeability (typically ≤1.05 μr). This means it will not attract magnets and is safe for use near sensitive electronic or medical equipment. However, slight magnetism may be induced if the steel is cold-worked, but we control our manufacturing process to keep it consistently low.
Q2: Can this wrench be used in underwater or marine environments?
A2: Yes. 304 stainless steel offers excellent corrosion resistance in freshwater and saltwater environments. For prolonged submersion in seawater, we recommend regular rinsing to prevent crevice corrosion. For extreme marine conditions, optional passivation treatment is available.
Q3: What size does the podger end taper to?
A3: The tapered end is typically ground to a bullet-shaped point with a tip diameter of approximately 3–5 mm. Exact dimensions can be customized based on your application. Standard models have a taper length of about 40–60 mm.
Q4: Does the tool have any certification or comply with international standards?
A4: Our wrenches are manufactured to meet common industry standards such as DIN 3110, ISO 3318, and ASME B107.100. Specific third-party certifications (e.g., NACE for corrosion) are available upon request and may be arranged for large orders.
Q5: Can I order a custom size with a specific marking or logo?
A5: Absolutely. We offer OEM/OEM services, including custom sizes (metric or imperial), custom laser engraving of logos, part numbers, or even barcodes. Minimum order quantity may apply for custom markings.
Q6: What is the typical lead time and shipping method?
A6: For stock sizes (e.g., 24mm, 30mm), lead time is 7–15 days. Custom sizes take 20–30 days depending on quantity. We ship via sea (FOB Tianjin/Shanghai/Ningbo) or air freight. Express delivery (DHL, FedEx, UPS) is available for small samples.
Q7: Is the wrench guaranteed against breakage?
A7: All our tools come with a standard 12-month warranty covering manufacturing defects. Under normal use, the 304 stainless steel provides good toughness. For extremely high torque applications, we recommend using impact-rated versions (available in 420 stainless steel on request).
Q8: Do you provide free samples?
A8: Yes, we offer free samples for standard sizes. You only need to cover the shipping cost. Contact our sales team to arrange sample requests.
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