Hex key (Allen wrench) Bondhus 19.0 mm — length 175 mm, model BO13888

Bondhus 19.0 mm hex key (Allen wrench), model BO13888, is a solid, single-piece tool with a 175 mm overall length designed for driving 19 mm internal-hex fasteners. The tool’s length provides extended reach and leverage for assembly, maintenance and repair tasks where access is limited or where additional torque is required. Constructed to meet common workshop and mechanical requirements, this hex key is intended for use with bolts and screws specified for 19.0 mm internal hex fittings.

Advantages

The 175 mm length improves reach into recessed or hard-to-access fasteners while offering better mechanical advantage than shorter keys. The single-piece construction reduces flex and potential breakage under load. Its solid hex profile ensures a secure fit in 19 mm internal-hex sockets to minimize cam-out and wear on both tool and fastener. The tool’s straightforward shape and size make it easy to store and identify among other hand tools.

Suitable for

• Workshop assembly and disassembly of machinery with 19 mm internal-hex fasteners
• Maintenance and repair tasks requiring extended reach
• Automotive or industrial applications with recessed hex bolts
• Situations where additional leverage is needed for tightening or loosening

Key specifications

• Hex size: 19.0 mm internal hex
• Overall length: 175 mm
• Material: solid single-piece hex key (steel alloy)
• Profile: standard hex (Allen) profile for internal-hex fasteners
• Finish: durable protective finish to resist corrosion and wear

How to use

Select the 19.0 mm hex key and insert the short or long end into the internal hex recess of the fastener until fully seated. Apply steady torque, using the longer length to increase leverage for loosening or tightening. For confined spaces, use the shorter end for greater clearance while retaining sufficient grip. Avoid applying excessive force beyond the fastener’s rating; if resistance is unusually high, inspect the fastener for damage or obstruction before continuing.

Usage recommendations

Use the 19.0 mm hex key with matching internal-hex fasteners only. Keep the contact surfaces clean and free of grease to ensure secure engagement. Store in a dry place to prolong the protective finish. For high-torque applications, consider using a torque-limiting tool or a wrench designed for higher torque to avoid damaging the tool or fastener.