Wera Joker 6004 Self-Setting Stainless Steel Spanner 10-13 mm, Matt Chrome 05073277001

Professional technicians and maintenance crews working on stainless steel assemblies in food processing, chemical plants, or marine environments need tools that resist corrosion and grip fasteners securely without damage. The Wera Joker 6004 self-setting spanner in stainless steel with a matt chrome finish delivers automatic, continuous gripping on metric nuts and bolts from 10 to 13 mm. Its integrated lever mechanism and 30° return angle allow fast, precise ratcheting in tight spaces, while the smooth parallel jaws prevent slipping and protect fastener edges. The ergonomic handle provides comfort during extended use, and the high corrosion resistance makes it ideal for demanding industrial applications.

Key specifications

• Tool type: Self-setting open-end spanner
• Material: Stainless steel
• Finish: Matt chrome
• Size range: 10-13 mm
• Jaw design: Smooth, parallel jaws
• Ratcheting function: Yes, integrated lever mechanism
• Return angle: 30°
• Application: Metric nuts and bolts
• Handle design: Ergonomic, comfortable grip
• Corrosion resistance: High
• Drive type: Open-end
• Head profile: Slim
• Automatic grip: Yes, continuous and automatic
• Brand series: Joker 6004
• Number of pieces: 1
• Safety features: Prevents slipping and damage to fasteners
• Working speed: Fast and precise

Why choose it

The Joker 6004 combines the convenience of a ratchet with the security of a fixed spanner. Its self-setting jaws automatically adjust to the fastener size, eliminating the need for manual adjustment and reducing the risk of rounding off nuts. The stainless steel construction ensures longevity in corrosive environments, while the matt chrome finish provides a durable, non-reflective surface.

Ideal use cases

• Maintenance and repair in food processing facilities
• Assembly work in chemical plants
• Marine and offshore applications
• General industrial maintenance where corrosion resistance is required

Good to know

The spanner is manufactured in Germany and is part of the Wera Joker 6004 series. It is designed for metric fasteners and offers a slim head profile for access in confined spaces.