Our hex keys—also known as Allen wrenches—are manufactured to exacting tolerances for professional-grade torque transmission, dimensional accuracy, and wear resistance in repetitive-use environments. Produced in-house or to OEM specifications, we supply L-wrench, T-handle, and ball-end variants in both metric (ISO 2936, DIN 911) and inch (ASME B18.3) formats.

We machine our hex keys from high-tensile alloy steels (commonly S2, Cr-V, or 8650) and heat-treat to core hardness levels of HRC 54–60 for long service life, resistance to rounding, and minimal torsional deflection under load. Stainless variants (304, 17-4PH) are available for clean-room, medical, and corrosive environments.

Tolerances on across-flat dimensions are held to ±0.0005″ to ensure a precision interference fit with socket head cap screws and set screws, minimizing cam-out and premature wear. Our ball-end hex keys are manufactured with true spherical radii and controlled offset angles (typically 25°) to maintain maximum surface contact during off-axis engagement.

Finishes include black oxide, nickel plating, phosphate coating, and chrome plating. Surface roughness is held below Ra 16 µin on all working faces to optimize fit and reduce galling in tight socket recesses.

We also offer custom marking, handle configurations, color coding, and packaging solutions for field service kits and production tool cribs. Hex keys are available individually, in matched sets, or bulk-packed for integration into automated assembly or kitting operations.

As with all our precision components, hex keys are supported by full dimensional certs, RoHS/REACH declarations, and lot-level traceability.