RH15DX18 Ring Head, 15D, 18mm

Tohnichi RH15DX18 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 15D (15 mm diameter round end) for seamless integration and an 18 mm ring opening for direct fastener engagement, this head delivers reliable torque transfer without slippage, compatible with select Tohnichi CTA, CTB, CL, PCL, and YCL series wrenches equipped with 15D 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: 15 mm Round End (15D insertion angle)
• Head Type: Ring (18 mm across flats)
• Ring Engagement: Direct grip for 18 mm hex fasteners; single-direction torque application
• Head Width: 27 mm (outside across flats)
• Compatibility: Tohnichi CTA100N, CTB100N, CL100N, CL50N, PCL90N, PCL50N, CL140N, YCL90N2, PCL140N, and other 15D-equipped interchangeable head torque wrenches
• Torque Capacity: Up to 100 N·m (head allowable; typically 40 - 100 N·m depending on wrench model)

Physical and Environmental Specifications

• Weight: 0.23 lbs (0.10 kg)
• Dimensions: 3.03" L x 1.06" W x 0.39" H (77 mm x 27 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 18 mm hex nuts/bolts, ensuring axis alignment between bolt and head to prevent wobbling and enhance precision in narrow clearances without slippage
• Compact 15D 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 27 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 medium-torque mechanical to heavy-duty fastening
• Drop-Prevention Design: Aligned axis configuration safeguards against accidental head detachment during operation, enhancing safety and tool integrity