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Help CenterSurface Hardened Convex Striking Hex Wrench, 8-36mm, Black Oxide Coating, Anti-Slip Handle
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Professional Surface Hardened Convex Striking Hex Wrench – Built for Heavy-Duty Performance
Since 2001, Cangzhou Dean Safety & Special Tools Co., Ltd has been a trusted manufacturer of high-quality industrial tools, with annual exports exceeding US$100 million to markets across North America, South America, Europe, Asia, Africa, and Oceania. Our Surface Hardened Convex Striking Hex Wrench, available in sizes from 8mm to 36mm, is engineered to deliver exceptional durability and safety in demanding applications. Featuring a black oxide coating for corrosion resistance and an anti-slip handle for secure grip, this wrench is the ideal solution for professionals who require reliable striking tools in heavy maintenance, automotive repair, and construction environments.
Each wrench undergoes a precise surface hardening process that creates a tough outer layer while retaining a ductile core, ensuring maximum resistance to wear and impact. The convex striking face is designed to direct force efficiently, reducing the risk of damage to fasteners and improving user safety. Whether you are loosening stubborn bolts or tightening heavy-duty connections, this striking hex wrench provides the torque and control you need.
Key Features & Benefits
- Surface Hardened Construction – The outer surface is hardened to Rockwell 50-55 HRC, providing excellent wear resistance and extended tool life. The core remains tough to absorb shock without cracking.
- Convex Striking Face – The unique convex shape distributes impact force evenly, minimizing deformation and preventing mushrooming of the wrench head. This design also protects the hammer face from damage.
- Black Oxide Coating – A durable black oxide finish offers superior corrosion and rust resistance, ensuring the wrench performs reliably in humid or harsh environments. The coating also reduces glare during use.
- Anti-Slip Handle – Ergonomically designed with textured gripping surfaces, the handle provides a secure hold even when wearing gloves or working in oily conditions. This feature enhances user control and reduces hand fatigue.
- Precision Sizing from 8mm to 36mm – Each size is manufactured to strict tolerances (ISO 2768 m) for a perfect fit on hex fasteners. The range covers common metric sizes used in industrial, automotive, and mechanical applications.
- Drop-Forged from High-Grade Alloy Steel – The wrench is forged from premium chromium-vanadium steel, offering a high strength-to-weight ratio and superior impact resistance.
- Versatile Application – Ideal for use with striking hammers, sledgehammers, or mallets. Suitable for heavy equipment assembly, pipeline maintenance, shipbuilding, and mining operations.
Technical Specifications
| Parameter | Details |
|---|---|
| Size Range | 8mm, 10mm, 12mm, 14mm, 17mm, 19mm, 22mm, 24mm, 27mm, 30mm, 32mm, 36mm |
| Material | 40Cr alloy steel (or equivalent), drop-forged |
| Surface Hardness | 50-55 HRC |
| Core Hardness | 30-35 HRC |
| Surface Finish | Black oxide coating, matte |
| Handle Design | Anti-slip texture, ergonomic shape |
| Weight (approx.) | Varies by size: e.g., 8mm ~ 0.2kg, 36mm ~ 1.5kg |
| Compliance | Manufactured according to industry standards; custom certifications available upon request |
Why Choose Our Striking Hex Wrench?
- Enhanced Safety: The convex face reduces the risk of chipping or splintering, and the anti-slip handle minimizes accidental drops. This design is field-tested for use in high-impact environments.
- Cost-Effective Durability: Surface hardening extends tool life by 3–5 times compared to standard hex wrenches, reducing replacement frequency and downtime.
- Complete Size Selection: Available in 12 common metric sizes from 8mm to 36mm, covering most industrial fasteners. Custom size options can be produced upon request for large-volume orders.
- Reliable Protection: Black oxide coating not only resists rust but also provides a non-reflective surface, making it suitable for use in low-light conditions or where glare must be avoided.
- Global Manufacturing Expertise: As a factory established in 2001 with an annual export value exceeding US$100 million, we have supplied tools to over 50 countries. Our production lines are equipped with advanced forging and heat-treatment facilities, ensuring consistent quality across all batches.
Our Surface Hardened Convex Striking Hex Wrench represents the culmination of two decades of manufacturing experience and continuous improvement. Every tool is inspected for dimensional accuracy, hardness, and surface finish before packaging. We offer flexible packaging options, including individual polybags, blister cards, or custom branding with your logo. For OEM/ODM projects, our engineering team can adjust the design to meet your specific requirements, such as handle length or striking face curvature.
We invite you to contact us for detailed specifications, pricing, or sample requests. With multiple shipping ports (Tianjin, Shanghai, Ningbo) and a reliable logistics network, we ensure timely delivery worldwide. Choose Cangzhou Dean Safety & Special Tools Co., Ltd as your partner in quality striking tools – experience the difference of professional-grade manufacturing.
Frequently Asked Questions (FAQ)
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What sizes are available for this striking hex wrench?
We offer 12 standard metric sizes: 8mm, 10mm, 12mm, 14mm, 17mm, 19mm, 22mm, 24mm, 27mm, 30mm, 32mm, and 36mm. Custom sizes can be produced for bulk orders. -
Is the black oxide coating durable under heavy use?
Yes, the black oxide finish is chemically bonded to the steel and provides excellent corrosion resistance while maintaining dimensional precision. It can withstand repeated impact and cleaning. -
Can the anti-slip handle be replaced if worn out?
The handle is integrated into the forged steel body; it is not detachable. However, the surface hardening and coating protect the handle area, ensuring long-term grip performance. -
What type of hammer should be used with this wrench?
A steel or brass striking hammer is recommended. Avoid using hardened steel hammers directly on the convex face if the face is not designed for that, but our convex face is optimized for standard striking hammers. -
Do you provide certificates of material or hardness?
Yes, a test report can be provided upon request. Custom certifications (e.g., material analysis, hardness test) are available for large orders at an additional cost. -
Can I order a single size for trial?
Absolutely. We accept sample orders for any single size. Minimum order quantity for production batches is typically 100 pieces per size. -
What is the lead time for standard orders?
For in-stock items, shipment can be arranged within 7–15 days. For custom sizes or OEM orders, lead time is 30–45 days depending on quantity and complexity. -
How do I clean and maintain this wrench?
Wipe with a clean cloth after use. Apply a light oil to the surface to maintain the black oxide coating if stored in humid conditions. Avoid abrasive cleaners that may damage the finish.
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