Professional 1/2" Torque Wrench, 65–350 Nm – Clockwise and Counterclockwise

This high-quality Stahlmaxx 1/2" professional torque wrench provides controlled torque release from 65 to 350 Nm for both right-hand and left-hand threaded fasteners.

The revised version of the established Stahlmaxx torque-wrench series retains the proven components of the previous generation while introducing improvements for easier handling, increased precision and longer service life.

It is suitable for professional mechanics, automotive workshops and industrial applications.

Clockwise and Counterclockwise Torque Release

The previous push-through drive design has been replaced by a direction-change mechanism with torque release in both directions.

This enables controlled tightening of right-hand and left-hand threaded fasteners without repositioning the square drive.

Socket Retention and Quick Release

The 1/2" drive incorporates a socket-retention function with quick release.

Sockets remain securely attached during use and can be released quickly when changing tools.

Fine-Tooth Ratchet Mechanism

The ratchet head has 72 fine teeth for controlled operation and a small return angle.

The ratchet head and internal components are manufactured from hardened chrome-molybdenum and chrome-vanadium steel.

Clearly Readable Adjustment Scale

The fine-adjustment scale is positioned directly on the handle instead of behind a viewing window.

This design:

• Eliminates the risk of a viewing window breaking if the tool is dropped
• Makes oil and grease easier to clean from the wrench
• Provides a clearly readable adjustment scale
• Allows settings in increments of 1.5 Nm or 1.5 lbf·ft

Spring-Loaded Torque Lock

A spring-loaded metal sliding collar locks the selected torque value.

Pull the collar while setting the required value. Once released, it engages automatically and secures the adjustment.

The adjustment ring and preload mechanism operate smoothly for simple and reliable torque selection.

Audible and Tactile Release

When the selected torque value is reached, the release can be clearly detected through both an audible signal and tactile feedback.

Durable Full-Metal Construction

The torque wrench has a robust full-metal construction with a durable powder-coated finish.

Its non-slip ergonomic handle provides a secure grip during adjustment and use.

Certified Accuracy

The torque wrench meets the requirements of:

• ISO 6789-1:2017
• DIN EN 6789-1:2017-07
• ASME B107.14M

An individual test certificate is included with the product.

The torque wrench can be opened at the handle, serviced and readjusted for future inspections and recertification. Spare parts and repair kits are available.

Maintenance, Care and Inspection

Torque wrenches are precision tools. Loading the tool beyond its specified torque range may affect its future accuracy.

For loosening bolted connections, the use of a breaker bar is recommended.

For reliable long-term performance:

• Store the torque wrench in its released, minimum-load setting
• Keep it in a dry environment
• Do not exceed the specified torque range
• Check the release accuracy every two years
• Inspect it earlier when used very frequently

Technical Specifications

• Brand: Stahlmaxx
• Drive size: 1/2"
• Torque range: 65–350 Nm
• Tightening direction: Clockwise and counterclockwise
• Ratchet-head teeth: 72
• Ratchet type: Fine-tooth
• Adjustment increments: 1.5 Nm / 1.5 lbf·ft
• Accuracy: 3% or better
• Ratchet-head material: Hardened CrMo steel
• Internal component material: Hardened CrMo and CrV steel
• Construction: Full metal
• Surface finish: Powder-coated
• Socket retention: Yes
• Quick release: Yes
• Length: 60.5 cm
• Weight: 1800 g
• Certifications: ISO 6789-1:2017, DIN EN 6789-1:2017-07 and ASME B107.14M

Scope of Delivery

• 1 × Stahlmaxx professional 1/2" torque wrench, 65–350 Nm, clockwise and counterclockwise tightening, 72 teeth
• 1 × Robust storage case
• 1 × Product-specific test certificate