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Help CenterMetric Striking Hex Key, 5-12mm Set, Black Oxide Coating, Impact Resistant
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Welcome to Cangzhou Dean Safety & Special Tools Co., Ltd – your trusted manufacturer of professional-grade striking hex keys since 2001. With an annual export value exceeding US$100 Million and a global footprint covering North America, South America, Europe, Asia, Africa, and Oceania, we take pride in delivering tools that combine precision, durability, and safety. Our Metric Striking Hex Key, 5-12mm Set, Black Oxide Coating, Impact Resistant is engineered for mechanics and industrial professionals who demand reliable performance under extreme torque conditions. Each key is crafted to withstand repeated hammer strikes without deformation, making it an indispensable tool for loosening seized bolts or tightening high-strength fasteners.
This set covers the most common metric sizes from 5mm to 12mm, precisely selected to meet the needs of automotive repair, heavy equipment maintenance, and construction projects. The striking head design allows you to use a hammer to deliver impact force directly to the hex key, increasing torque while protecting the tool from bending or breaking. Whether you are working on machinery, hydraulic systems, or structural steel, this hex key set provides a secure grip and long service life.
Product Features & Technical Specifications
- Premium Material: Manufactured from high-grade chrome vanadium steel, heat-treated to achieve a hardness of HRC 48-52, ensuring excellent strength and impact toughness.
- Black Oxide Coating: Provides corrosion resistance, reduces friction, and gives a professional matte black finish that resists oil and grease buildup.
- Impact-Resistant Design: The ball-end (or non-ball) striking head is reinforced to absorb shock, making it suitable for use with impact wrenches or manual hammer strikes.
- Complete Metric Set: Includes 6 pieces: 5mm, 6mm, 7mm, 8mm, 10mm, and 12mm. Each key is clearly marked for quick identification.
- Ergonomic Handle: The long shank provides extra reach and leverage, reducing user fatigue during heavy-duty applications.
- Versatile Application: Ideal for automotive, marine, agricultural, and industrial maintenance tasks where high torque is required.
| Size (mm) | Hex Head Width (mm) | Overall Length (mm) | Hardness (HRC) |
|---|---|---|---|
| 5 | 10 | 110 | 48-52 |
| 6 | 12 | 130 | 48-52 |
| 7 | 14 | 150 | 48-52 |
| 8 | 16 | 170 | 48-52 |
| 10 | 20 | 200 | 48-52 |
| 12 | 24 | 230 | 48-52 |
Why Choose Our Striking Hex Key Set?
- Factory Direct Quality: We have been manufacturing safety and special tools since 2001. Every hex key undergoes strict quality control to ensure consistent hardness and dimensional accuracy.
- Customizable Options: Available in individual sizes or custom sets. We can also apply your brand or packaging specifications (OEM welcome).
- Cost-Effective: By sourcing directly from the manufacturer, you eliminate middlemen costs without sacrificing quality.
- Global Shipping: We ship from Tianjin, Shanghai, and Ningbo ports with reliable logistics partners. Your order will reach you efficiently.
Trust the experts at Cangzhou Dean Safety & Special Tools Co., Ltd. With over two decades of experience and an annual export value above US$100 million, we have supplied striking hex keys to professionals worldwide. Our tools are used in demanding environments from automotive garages to heavy machinery workshops. We are confident that our 5-12mm Metric Striking Hex Key Set will exceed your expectations in both performance and longevity. Contact us today to place an order or request a sample. Let us help you solve your toughest fastening challenges.
Frequently Asked Questions (FAQ)
Q1: Can I use these hex keys with an impact wrench?
A: Yes, these striking hex keys are designed to withstand impact forces. However, we recommend using a manual hammer or striking tool for maximum control. For impact wrench use, ensure the hex key is properly seated in the fastener to avoid deformation.
Q2: Are the sizes marked on each key?
A: Yes, each hex key has the metric size clearly laser-etched on the shank for quick identification.
Q3: Is the black oxide coating durable?
A: The black oxide finish is chemically bonded and provides excellent corrosion resistance and reduced friction. It withstands normal usage and cleaning without flaking.
Q4: What is the maximum torque I can apply?
A: Torque capacity depends on the size and application. Generally, a 12mm key can handle over 200 N·m with a suitable striking tool. For exact limits, consult our technical support.
Q5: Do you offer a storage case or organizer?
A: The standard set comes with a convenient plastic holder or canvas roll. Custom packaging is available upon request.
Q6: Can I purchase individual sizes instead of the full set?
A: Yes, we offer individual striking hex keys in sizes 5-12mm. Please contact us for pricing and minimum order quantities.
Q7: How do I clean and maintain these tools?
A: Simply wipe with a clean cloth after use. To prevent rust in humid environments, apply a light coat of oil periodically.
Q8: What is the lead time for orders?
A: For stock items, we can ship within 5-7 working days. Large custom orders may require 15-20 days. We will confirm upon order placement.
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