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Help CenterSelf-Locking Adjustable Wrench 45# Steel, 290mm, 36 mm Opening,Heavy Duty Self-Locking Spanner With Adjustable Grip Function
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Cangzhou Dean Safety & Special Tools Co., Ltd., a professional manufacturer established in 2001 with an annual export value exceeding US$100 Million, proudly introduces our Self-Locking Adjustable Wrench (45# Steel, 290mm, 36mm Opening). This heavy-duty spanner is engineered with a revolutionary self-locking mechanism and an adjustable grip function, delivering unmatched safety and efficiency for demanding tasks. Whether you are a professional mechanic or a DIY enthusiast, this tool is built to provide reliable and consistent performance in tight spaces and extreme conditions.
The core advantage of our wrench lies in its self-locking jaw, which automatically tightens around the fastener as you apply force, preventing slippage and accidental loosening. The adjustable grip handle allows you to customize the holding angle, reducing hand fatigue during prolonged use. Made from high-quality 45# steel, it ensures durability and resistance to deformation, even under high torque.
Key Features & Technical Specifications
- Self-Locking Mechanism: Automatically grips the fastener; no need to constantly readjust the thumb wheel.
- Adjustable Grip Handle: Ergonomic design with a pivoting handle that rotates to multiple angles, providing better access in confined areas.
- Premium 45# Steel Construction: Heat-treated and hardened for optimal strength and longevity.
- Heavy-Duty Capacity: 290mm overall length delivers ample leverage; maximum jaw opening of 36mm accommodates a wide range of bolts and nuts.
- Precision Fit: The jaws are laser-cut and ground to ensure accurate sizing and minimal play.
- Corrosion-Resistant Finish: Optional black oxide or chrome plating protects against rust and wear.
| Parameter | Value |
| Material | 45# Carbon Steel |
| Overall Length | 290 mm (11.4 inches) |
| Max Jaw Opening | 36 mm (1.42 inches) |
| Weight | Approx. 0.65 kg (1.43 lbs) |
| Locking Type | Self-Locking (auto grip) |
| Handle Adjustability | Multi-position pivot (3 preset angles) |
| Surface Finish | Black oxide (standard) / Chrome (optional) |
Benefits & Applications
- Eliminates Readjustment: The self-locking feature saves time – no more constant tightening of the thumbwheel as you work.
- Enhanced Safety: The jaw locks instantly when torque is applied, reducing the risk of rounding fastener heads or causing hand injuries.
- Versatile Usability: Ideal for plumbing, automotive repair, machinery maintenance, and construction where space is limited.
- Reduced Fatigue: The adjustable grip handle adapts to natural hand movements, allowing you to maintain a comfortable wrist angle.
- Long Service Life: 45# steel with heat treatment ensures the tool withstands high loads without bending or cracking.
Our self-locking adjustable wrench is manufactured in our ISO-compliant facility (certification details available upon request) and undergoes rigorous quality checks. Each unit is tested for locking force, jaw parallelism, and overall strength before shipment. We offer customizable surface finishes and packaging options to meet your brand requirements.
Trust & Reliability
As a trusted manufacturer with over two decades of experience, Cangzhou Dean Safety & Special Tools Co., Ltd. has built a solid reputation among global buyers. Our annual export value of over US$100 million reflects the scale and reliability of our operations. We serve diverse markets including North America, South America, Europe, Southeast Asia, Africa, and Oceania. Our products are shipped from Tianjin, Shanghai, or Ningbo ports with efficient logistics support. Whether you need small trial orders or large container shipments, we are committed to delivering consistent quality and competitive pricing. Contact us today to request a sample or discuss your customized requirements. Let our professional team provide you with the right tool solution for your business.
Frequently Asked Questions
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Q: How does the self-locking mechanism work?
A: The wrench features a spring-loaded internal mechanism that automatically tightens the movable jaw against the fastener when force is applied in the turning direction. As you release force, the lock disengages, allowing easy repositioning. -
Q: Is the handle truly adjustable?
A: Yes. The handle can be pivoted to three different positions (0°, 15°, and 30° relative to the wrench axis), enabling you to work in tight corners or overhead. -
Q: What is the maximum torque this wrench can handle?
A: While exact torque values vary with usage, the 45# steel construction and self-locking design allow it to handle typical heavy-duty tasks like tightening Musingactions up to 150 N·m in controlled tests. For extreme torques, we recommend using appropriate cheater bars only as directed. -
Q: Can I get the wrench with a chrome-plated finish?
A: Yes. We offer both black oxide and chrome-plated finishes. Please specify your preference when ordering. -
Q: What is the weight of this wrench?
A: Approximately 0.65 kg (1.43 lbs), which provides a good balance between durability and ease of handling. -
Q: Is this wrench suitable for automotive repair?
A: Absolutely. Its 36mm opening covers common automotive bolts, and the self-locking feature is especially useful for hard-to-reach engine components. -
Q: Do you offer custom branding or packaging?
A: Yes. We can print your logo on the handle or packing box. Minimum order quantities apply for custom branding. Contact our sales team for details. -
Q: What is the lead time for mass production?
A: For standard models, lead time is typically 30–45 days after order confirmation. For custom orders, it may vary depending on complexity.
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