HH19DX17 Hex Key Head, 19D, 17mm

Tohnichi HH19DX17 is a precision hex key head designed as an interchangeable accessory for torque wrenches, facilitating accurate tightening of hexagon socket head cap screws (Allen bolts) in restricted access areas across automotive assembly, electronics manufacturing, and precision engineering tasks. Featuring a compact 19D (19 mm diameter round end) for seamless integration and a 17 mm hex socket for direct Allen key insertion, this head delivers reliable torque transfer without the need for additional adapters, compatible with select Tohnichi CTA, CTB, CL, YCL, PCL, CSP, CF, CEM, and CDB series wrenches equipped with 19D 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: 19 mm Round End (19D insertion angle)
• Head Type: Hex socket (17 mm width across flats)
• Hex Engagement: Direct insertion for 17 mm Allen key; single-direction torque application
• Head Width: 26 mm (across flats)
• Compatibility: Tohnichi CTA200N, CTB200N, CL200N, YCL180N2, PCL180N, CSP200N, CF150N, CEM200N3, CDB200N-S, and other 19D-equipped interchangeable head torque wrenches
• Torque Capacity: Up to 200 N·m (head allowable; typically 50 - 200 N·m depending on wrench model)

Physical and Environmental Specifications

• Weight: 0.49 lbs (0.22 kg)
• Dimensions: 3.15" L x 1.02" W x 0.51" H (80 mm x 26 mm x 13 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

• Direct Hex Key Insertion: Accommodates a 17 mm Allen key for straightforward engagement with socket head cap screws, enabling precise control in narrow clearances without slippage
• Compact 19D 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 13 mm thickness and 26 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