RH12DX16 Ring Head, 12D, 16mm

Tohnichi RH12DX16 is a precision ring head designed as an interchangeable accessory for torque wrenches, enabling accurate tightening of external hex nuts and bolts in restricted access areas across automotive assembly, electronics manufacturing, and precision engineering tasks. Featuring a compact 12D (12 mm diameter round end) for seamless integration and a 16 mm ring opening for direct fastener engagement, this head delivers reliable torque transfer without slippage, compatible with select Tohnichi CTA, CTB, CL, YCL, CSP, and CEM series wrenches equipped with 12D interfaces. Ergonomically lightweight with robust construction, it supports rapid head exchanges to optimize workflow efficiency, minimize downtime, and ensure consistent torque application in space-constrained operations.

Key Performance Specifications

• Drive Size: 12 mm Round End (12D insertion angle)
• Head Type: Ring (16 mm across flats)
• Ring Engagement: Direct grip for 16 mm hex fasteners; single-direction torque application
• Head Width: 24 mm (outside across flats)
• Compatibility: Tohnichi CTA50N, CTB50N, CL50N, YCL40N2, CSP50N, CEM50N3, and other 12D-equipped interchangeable head torque wrenches
• Torque Capacity: Up to 59 N·m (head allowable; typically 20 - 59 N·m depending on wrench model)

Physical and Environmental Specifications

• Weight: 0.2 lbs (0.09 kg)
• Dimensions: 2.09" L x 0.94" W x 0.39" H (53 mm x 24 mm x 10 mm)
• Material: High-strength alloy steel with hardened finish
• Operating Temperature: 14°F to 104°F (-10°C to 40°C); suitable for standard workshop conditions
• Storage Conditions: Dry environment to prevent corrosion; indefinite shelf life

Key Features

• Secure Ring Grip: Provides full circumferential engagement for 16 mm hex nuts/bolts, ensuring axis alignment between bolt and head to prevent wobbling and enhance precision in narrow clearances without slippage
• Compact 12D Interface: Secure round-end design locks firmly into compatible wrench bases, allowing quick swaps for versatile fastener handling and reduced setup time
• Low-Profile Build: Slim 10 mm thickness and 24 mm width minimize obstruction in tight spots, ideal for assembly lines and maintenance in confined machinery
• Durable Alloy Construction: Hardened steel withstands high-cycle use and minor impacts, promoting longevity and reliability in demanding industrial environments
• Versatile Compatibility: Effortlessly pairs with multiple Tohnichi wrench models for broad application coverage, from low-torque electronics to medium-duty mechanical fastening
• Drop-Prevention Design: Aligned axis configuration safeguards against accidental head detachment during operation, enhancing safety and tool integrity