Proto Long Arm Hex Key - 3/16" J46212-SBD

Proto's professional-grade individual L-key designed for high-torque industrial maintenance and mechanical assembly. This tool features an extra-long arm configuration (4-1/2"), which provides significantly better access to deeply recessed fasteners and increased leverage compared to standard keys. It is manufactured from high-strength alloy steel and finished with a black oxide coating for superior resistance to rotational torque and environmental corrosion. This 3/16" size is a standard requirement for a wide range of machinery, automotive components, and industrial equipment.
Key Features
Extra-long arm configuration (4-1/2") offers extended reach and improved leverage for high-torque performance.
Forged from heat-treated alloy steel for industrial-level durability and resistance to stripping.
Black oxide finish provides professional protection against rust and chemical wear.
Precision-machined tips ensure a tight, secure fit into fastener heads to prevent rounding.
Short arm length of 15/16" allows for effective use in tight clearance situations.
Meets or exceeds ASME B18.3 industrial standards.