SH8DX21 Open End Head, 8D, 21mm

Tohnichi SH8DX19 is a precision open end head designed as an interchangeable accessory for torque wrenches, facilitating 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 a 19 mm open end 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: Open end (19 mm across flats)
• Engagement: Direct two-sided grip for 19 mm hex fasteners; single-direction torque application
• Head Width: 25 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 wrench rating (typically 5 - 15 N·m depending on wrench model)

Physical and Environmental Specifications

• Weight: 0.1 lbs (0.045 kg)
• Dimensions: 1.5" L x 0.98" W x 0.24" H (38 mm x 25 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 Open End Grip: Provides reliable two-sided engagement for 19 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 25 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