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Help Center12-Point Single Ring Box Wrench, 300mm Length, High Torque Design for Heavy Duty Machinery Mining Ship
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Discover the ultimate torque delivery tool for demanding industrial environments: the 12-Point Single Ring Box Wrench, 300mm Length, engineered specifically for heavy duty machinery, mining, and ship applications. Manufactured by Cangzhou Dean Safety&Special Tools Co., Ltd., an industry-leading manufacturer with over two decades of experience (since 2001) and annual exports exceeding US$100 Million, this wrench combines precision, durability, and ergonomics. Our facility in Cangzhou, Hebei, China, produces tools trusted across North America, South America, Europe, Africa, Oceania, and Asia. This 300mm box wrench delivers exceptional torque transmission without slippage, thanks to the 12-point design that engages the fastener at multiple angles. Whether you're maintaining mining excavators, ship engines, or heavy construction machinery, this tool is built to withstand repetitive high-load applications.
Product Features & Technical Specifications
12-Point Box End Design: Provides 12 contact points for maximum grip and reduced fastener rounding. Ideal for hex and square fasteners commonly found in heavy machinery.
AISI 4140 Alloy Steel Construction: Heat-treated to achieve optimal hardness (HRC 48-52) and toughness, ensuring long service life under extreme torque.
High Torque Geometry: Thicker wall head and reinforced shaft transfer high torque without deformation. Tested to exceed ANSI/ASME B107.100 standards.
Ergonomic 300mm Overall Length: Balances leverage and access in tight engine compartments and cramped machinery spaces.
Corrosion-Resistant Finish: Phosphate coating provides anti-rust protection for marine and mining environments. Optional black oxide or chrome plating available.
Non-Slip Grip: Shaft features knurling or smooth finish based on client preference; customizable.
Certified Material Traceability: Each batch is tested for chemical composition and mechanical properties (mill certificates available).
| Parameter | Value |
|---|---|
| Length | 300 mm ±2 mm |
| Head Diameter | 35 mm (approx.) |
| Open End Thickness | 12.5 mm |
| Torque Capacity* | ≥ 250 N·m (ultimated) |
| Weight | 350 g |
| Finish Options | Phosphate, Black Oxide, Chrome, or Custom |
*Torque rating depends on fastener condition and application. Contact our engineering team for specific recommendations.
Why Choose This Wrench for Your Industry?
Heavy Duty Machinery: Withstands repetitive use on high-torque bolts in presses, crushers, and conveyors.
Mining Operations: Resistant to dust, dirt, and moisture. The 12-point design reduces fastener damage in abrasive conditions.
Shipbuilding & Marine: The anti-corrosion finish and robust structure meet the rigorous demands of saltwater environments and confined engine rooms.
Time and Cost Savings: Fewer fastener rounding means less downtime and reduced replacement costs for both tools and bolts.
Customizable Options: Available in different materials, lengths, and finishes (including metric sizes) to match your fleet requirements.
Trusted by Global Industries – Over 20 Years of Manufacturing Excellence
Since 2001, Cangzhou Dean Safety&Special Tools Co., Ltd. has been dedicated to producing high-quality safety tools and special-purpose equipment. With annual export value exceeding US$100 Million, our products reach over 20 countries across North America, South America, Europe, Africa, Oceania, and Asia. We operate a state-of-the-art facility in Cangzhou, Hebei, strictly controlling every step from raw material selection to final calibration. Our wrenches are used by major mining contractors, shipyards, and heavy equipment maintenance companies worldwide.
Choose Dean Safety for consistent quality, competitive pricing, and responsive technical support. We offer OEM/ODM services, private labeling, and just-in-time delivery from Tianjin, Shanghai, or Ningbo ports. Every order is backed by a rigorous quality inspection and full material certification.
Ready to enhance your tool arsenal? Contact our sales team for a quote or request samples for evaluation. Experience the Dean Safety difference – where strength meets precision.
Frequently Asked Questions
Q1: What is the difference between 12-point and 6-point box wrenches?
A: 12-point wrenches have 12 contact angles inside the head, allowing engagement every 30 degrees. This provides more flexibility in tight spaces and works on both hex and square fasteners. For heavy-duty applications, 12-point design reduces the chance of rounding when high torque is applied.
Q2: Is this wrench suitable for use with impact tools?
A: No, this is a manual hand tool designed for hand torque application. Using power tools may overstress the tool and cause damage. For impact applications, we recommend our impact socket line.
Q3: What materials are available? Can I order a stainless steel version?
A: Our standard is AISI 4140 alloy steel. Stainless steel (e.g., 17-4PH) is available on request for environments requiring superior corrosion resistance. Lead time and minimum order quantity may apply.
Q4: Do you offer metric or SAE sizes? What about custom lengths?
A: Yes, both metric (from 10mm to 50mm) and SAE (from 3/8" to 2") sizes are available. Length and finish can be customized. Please provide your specifications for a quotation.
Q5: How do I verify the material quality? Can you provide mill certificates?
A: Yes, every production batch is tested, and material certificates are provided upon request. We maintain full traceability on raw materials.
Q6: What is your minimum order quantity (MOQ) for this wrench?
A: For standard sizes and finishes, MOQ is 100 pieces per size. Custom orders may have different MOQ based on complexity. We can also accommodate small trial orders for sample evaluation.
Q7: How is the tool packaged for export?
A: Standard packaging includes individual polybags, then bulk packing in export-strength cartons. Custom packaging (e.g., plastic hangers, blow-molded cases, or private label boxes) is available.
Q8: What is the typical delivery time?
A: For standard products, 15–25 days after order confirmation. Customized orders may require 30–40 days depending on quantity and specifications. All shipments are arranged from Tianjin, Shanghai, or Ningbo ports.
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