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Help Center1/4" Drive Self-Locking Torque Wrench, 5-25 Ft-lb, Dual Scale Nm, Stainless Steel Construction
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From Cangzhou Dean Safety & Special Tools Co., Ltd – a trusted manufacturer since 2001 with annual export value exceeding US$100 million – we proudly present our 1/4" Drive Self-Locking Torque Wrench (5-25 ft-lb / dual scale Nm). Engineered with a robust stainless steel construction, this precision tool delivers accurate torque control for critical fastening applications. Whether you are working on delicate electronics or heavy-duty automotive components, our torque wrench ensures consistent results and long-lasting performance.
Self-locking mechanism prevents accidental torque adjustment during use, enhancing safety and reliability. The dual scale (ft-lb and Nm) allows easy reading in both imperial and metric units, catering to global users. With a compact 1/4" drive size, it is ideal for tight spaces and light to medium torque requirements.
Key Features & Technical Specifications
- Self-Locking Collar: Locks the torque setting automatically – no need to manually tighten a lock nut. Prevents unintentional changes.
- Stainless Steel Construction: Corrosion-resistant body and internal components for longevity in harsh environments.
- Dual Scale (ft-lb / Nm): Calibrated in both units; fine graduations for precise adjustment.
- Accuracy: ±3% clockwise (within tolerance for most industrial standards).
- Comfort Grip Handle: Ergonomic design reduces hand fatigue during repetitive use.
- Calibration Certificate: Each wrench is tested and comes with a traceable calibration document (optional upon request).
| Drive Size | 1/4" |
| Torque Range | 5-25 ft-lb (6.8-33.9 Nm) |
| Scale Graduation | 0.5 ft-lb / 0.5 Nm |
| Material | Stainless Steel |
| Self-Locking | Yes (automatic locking) |
| Accuracy | ±3% (CW) |
| Overall Length | Approx. 10 inches |
| Weight | 0.8 lbs |
| Application | Automotive, motorcycle, bicycle, HVAC, electronics assembly |
Detailed Advantages
Self-Locking Mechanism: Unlike traditional torque wrenches that require a separate locking ring, our design integrates the lock into the adjustment collar. Simply set the desired torque, and the mechanism automatically engages, preventing the setting from drifting during use. This saves time and eliminates the risk of overtightening or undertightening due to accidental movement.
Stainless Steel Durability: The entire wrench head, shaft, and internal spring mechanism are made of high-grade stainless steel. This provides excellent resistance to rust, corrosion, and chemical exposure – ideal for workshops, labs, and outdoor environments. The stainless steel also ensures consistent calibration stability over time.
Dual Scale Visibility: Clear laser-etched markings on both ft-lb and Nm scales. The scale is positioned on the handle for easy reading while in use. No more converting units manually – just select the appropriate scale and turn the knob. The dual scale also makes this wrench compatible with international specifications.
Precision & Repeatability: Each wrench is individually calibrated and tested at multiple points across the torque range. The accuracy of ±3% is achieved through a precision spring and a ratcheting head mechanism. For critical fasteners where torque is essential (e.g., cylinder head bolts, brake calipers), this tool ensures consistent clamping force.
Ergonomic Design: The handle is contoured and covered with a non-slip rubberized grip (optional). The overall length of 10 inches provides sufficient leverage to generate up to 25 ft-lb without excessive force. The compact 1/4" drive head fits into confined engine bays or panel openings.
Versatility: Suitable for a wide range of tasks: bicycle assembly (pedals, seatposts), small engine maintenance, motorcycle bolts, electronic equipment, and light industrial applications. The self-locking feature is particularly useful when working in tight spots where you cannot see the torque setting.
Why Choose Cangzhou Dean Safety & Special Tools?
Since 2001, our company has been a dedicated manufacturer of specialty tools and safety equipment. With an annual export value of over US$100 million, we supply to customers across North America, Europe, Southeast Asia, Africa, Oceania, and more. Our products are shipped from the ports of Tianjin, Shanghai, and Ningbo, ensuring fast and reliable logistics. We pride ourselves on rigorous quality control – every torque wrench passes a functional test before packaging. This commitment to quality has earned us long-term partnerships with automotive OEMs, industrial distributors, and tool retailers worldwide.
We offer customization options such as special torque ranges, alternate drive sizes, or customized packaging with your brand logo (order quantity applies). Our experienced engineering team can also adapt the design for specific applications. Contact us for volume pricing, samples, or technical specifications.
Invest in a tool that combines precision, durability, and safety. The 1/4" Drive Self-Locking Torque Wrench from Cangzhou Dean is built to last and backed by over two decades of manufacturing expertise. Order today and experience the difference in your work quality.
Frequently Asked Questions (FAQ)
Q1: What is the advantage of self-locking compared to a standard torque wrench?
A: Self-locking automatically secures the torque setting, preventing accidental changes while you work. Standard wrenches require a separate locking ring that can be forgotten or loosen over time.
Q2: Is the stainless steel body fully corrosion resistant?
A: Yes, stainless steel construction offers superior resistance to rust and corrosion, making it suitable for humid or chemical-exposed environments. However, avoid prolonged immersion in strong acids or alkalis.
Q3: What is the accuracy of this torque wrench?
A: The accuracy is ±3% clockwise at room temperature (68°F / 20°C). It meets typical industrial standards. For critical applications, we recommend periodic recalibration (available as a service).
Q4: Can I use it for left-handed (counterclockwise) fastening?
A: This wrench is calibrated for clockwise (right-hand) torque. Counterclockwise accuracy is not specified; we recommend using a dedicated left-hand torque wrench if needed.
Q5: Does it come with a calibration certificate?
A: Yes, each wrench can be supplied with a traceable calibration certificate upon request. Please specify when placing your order.
Q6: What is the overall length and does it fit in a standard tool box?
A: The total length is approximately 10 inches (254 mm), making it compact enough for most tool chests and portable kits.
Q7: Can I get a different torque range or drive size?
A: Custom ranges and drive sizes (e.g., 3/8", 1/2") are available as special orders. Contact our sales team with your requirements.
Q8: What is the warranty period?
A: We offer a standard 12-month warranty against manufacturing defects. Extended warranty options are available for bulk purchases.
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