RH8DX11 Ring Head, 8D, 11mm

Tohnichi RH8DX11 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 electronics manufacturing, precision assembly, and small-scale engineering tasks. Featuring a compact 8D (8 mm diameter round end) for seamless integration and an 11 mm ring opening for direct fastener engagement, this head delivers reliable torque transfer without slippage, compatible with select Tohnichi CL, CSP, CSF, CDB, and CEM series wrenches equipped with 8D 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: 8 mm Round End (8D insertion angle)
• Head Type: Ring (11 mm across flats)
• Ring Engagement: Direct grip for 11 mm hex fasteners; single-direction torque application
• Head Width: 17 mm (outside across flats)
• Compatibility: Tohnichi CL10N, CSP6N, CSF7N, CL2N, CL1.5N, CSP1.5N, CL3N, CSP3N, CDB7N-S, CDB14N-S, CEM10N3, and other 8D-equipped interchangeable head torque wrenches
• Torque Capacity: Up to 15 N·m (head allowable; typically 5 - 15 N·m depending on wrench model)

Physical and Environmental Specifications

• Weight: 0.07 lbs (0.032 kg)
• Dimensions: 1.5" L x 0.67" W x 0.24" H (38 mm x 17 mm x 6 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 11 mm hex nuts/bolts, ensuring axis alignment between bolt and head to prevent wobbling and enhance precision in narrow clearances without slippage
• Compact 8D 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 6 mm thickness and 17 mm width minimize obstruction in tight spots, ideal for precision assembly lines and maintenance in confined electronics
• Durable Alloy Construction: Hardened steel withstands high-cycle use and minor impacts, promoting longevity and reliability in demanding low-torque environments
• Versatile Compatibility: Effortlessly pairs with multiple Tohnichi wrench models for broad application coverage, from ultra-low-torque micro-fastening to light-duty mechanical tasks
• Drop-Prevention Design: Aligned axis configuration safeguards against accidental head detachment during operation, enhancing safety and tool integrity