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Help CenterCompact Self-Locking Torque Wrench for Precision Equipment Maintenance, 0.5-10 Nm, Dual Scale, 1/4" Drive
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From the factory floor to delicate instrumentation, reliable torque control is non-negotiable. For over two decades, Cangzhou Dean Safety&Special Tools Co., Ltd has supplied precision tools to demanding professionals worldwide. Our Compact Self-Locking Torque Wrench (0.5–10 Nm, Dual Scale, 1/4" Drive) is engineered to deliver consistent, accurate torque for the maintenance of sensitive equipment. Whether you're calibrating medical devices, assembling electronics, or servicing aircraft components, this wrench offers the repeatability and safety you need – in a compact, easy-to-use package.
This torque wrench stands out for its self-locking mechanism, which prevents accidental torque adjustment during use, ensuring every fastening is within specification. The dual-scale display (Nm and in-lb) allows immediate readability without conversion guesswork, while the 1/4" square drive fits the most common precision sockets. Built with hardened alloy steel and a slim handle, it reaches tight spaces that larger wrenches cannot, making it ideal for maintenance crews and field service technicians.
Key Features & Technical Specifications
| Parameter | Details |
|---|---|
| Torque Range | 0.5 – 10 Nm (4.4 – 88.5 in-lb) |
| Drive Size | 1/4" square drive |
| Scale Type | Dual scale (Nm & in-lb), marking laser-etched for durability |
| Locking Mechanism | Self-locking push‑pull collar; prevents accidental setting change |
| Accuracy | ±4% (in clockwise direction, from 20% to 100% of full scale) |
| Material | Heat-treated alloy steel body, hardened drive head |
| Handle Grip | Ergonomic rubberized grip with anti‑slip texture |
| Overall Length | 190 mm (7.5 inches) – compact for confined spaces |
| Weight | 0.4 kg (0.88 lbs) – lightweight for prolonged use |
| Calibration | Factory calibrated; can be recalibrated per customer request |
Why This Wrench is Ideal for Precision Equipment Maintenance
- Self-locking design eliminates torque drift. The push‑pull collar locks the setting firmly, so even during repeated use, the torque value remains unchanged. No more second‑guessing whether your last fastener was over‑ or under‑tightened.
- Dual scale increases work efficiency. Read the scale in either Nm or in‑lb without mental conversion. This feature is especially valuable when servicing equipment with mixed specification manuals.
- Compact form factor reaches tight spots. At just 190 mm length, it slides into cramped control cabinets, behind panels, or inside machinery frames where standard ratchets won't fit.
- Ergonomic grip reduces hand fatigue. The rubberized handle provides a secure, comfortable hold even with sweaty or gloved hands, allowing precise control during delicate adjustments.
- Heat‑treated alloy steel construction ensures longevity. Each wrench is built to withstand repetitive use in workshops and field environments, with a corrosion‑resistant finish that maintains appearance and function.
- Audible and tactile click signal – When the preset torque is reached, you feel a distinct click and hear a clear sound, confirming the fastening is complete without over‑torquing.
This torque wrench is not just a tool – it's an investment in quality assurance. Whether you are tightening screws on a circuit board, adjusting optical mounts, or assembling drone frames, consistent torque prevents thread stripping, joint failure, and costly rework. The narrow 0.5–10 Nm range is tailored to the most common low‑torque applications found in electronics, instrumentation, and small‑engine maintenance.
Trust Built Over Two Decades
Since 2001, Cangzhou Dean Safety&Special Tools Co., Ltd has been manufacturing safety and specialty tools for a global clientele. With annual export value exceeding US$100 million, our products are trusted by customers across North America, South America, Europe, Asia, Africa, Oceania, and the Middle East. We operate from our headquarters in Cangzhou, Hebei, and ship through major ports including Tianjin, Shanghai, and Ningbo.
Every torque wrench undergoes rigorous factory calibration before leaving our facility. Our quality management system ensures repeatable performance from unit to unit. We also offer customization options, such as marking with your company logo, special packaging, or recalibration services upon request.
Ready to upgrade your precision maintenance toolkit? Contact our sales team for bulk pricing or a sample order. With decades of experience and a global logistics network, we deliver reliable tools that keep your operations running smoothly.
Frequently Asked Questions (FAQ)
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What is the difference between a self-locking torque wrench and a regular one?
A self-locking torque wrench has a collar or ring that locks the torque setting after adjustment. This prevents the setting from changing accidentally when you apply force, ensuring consistent torque throughout a job. Regular wrenches may slip out of setting when bumped or during storage. -
Can I use this wrench for right‑hand (clockwise) and left‑hand (counter‑clockwise) fastening?
The accuracy specification (±4%) applies to clockwise (right‑hand) tightening only. Left‑hand torque values are less precisely controlled. For left‑hand applications, we recommend using it as a reference and testing the actual torque with a separate gauge if critical. -
Is the wrench pre‑calibrated, and how do I recalibrate it?
Yes, every wrench is factory‑calibrated. For recalibration, you can return it to our service center or use a standard torque tester. The push‑pull collar design also allows easy partial disassembly for cleaning and recalibration by qualified technicians. -
Does the dual‑scale display show both units simultaneously?
The scale is marked with both Nm and in‑lb graduations on the same barrel. You read the value in one unit or the other directly – they are not overlapping but are clearly separated by lines and numbers. Both scales are permanently laser‑etched for durability. -
What size socket does the 1/4" drive accept?
It accepts any standard 1/4" square‑drive socket. For precision work, we recommend using high‑grade sockets to avoid play that could affect torque accuracy. -
Is this wrench suitable for automotive work?
It is excellent for small fasteners in automotive electronics, interior panels, and motorcycle engines. However, for high‑torque applications (e.g., wheel lugs >10 Nm), you need a larger torque wrench. This model covers the low‑torque segment. -
What is the warranty period?
We offer a standard 12‑month warranty against manufacturing defects. Extended warranty options are available for volume orders. Please contact our sales team for details. -
Can I get the tool with custom branding?
Yes, we provide OEM/ODM services. You can have your company logo laser‑engraved on the barrel and request custom packaging. Minimum order quantity applies – contact us for a quote.
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