Tekton Inc KLX91212 Short Arm Ball End Hex Key Set 10pc

Product Description

The TEKTON INC KLX91212 is a 10-piece short arm ball end hex L-key set with an integrated holder, covering metric sizes from 1.3 MM to 10 MM. Each key is machined from 8660 nickel chromium molybdenum steel, heat-treated to 54-58 HRC for hardness without brittleness. The short arm design keeps the user close to the fastener for better control in confined spaces, while the larger sizes feature longer arms for increased leverage. A manganese phosphate finish provides corrosion resistance. This set is used by mechanics, millwrights, equipment technicians, and trade professionals who regularly work with metric socket head fasteners.

This set is suited for residential and commercial maintenance tasks, machinery assembly, HVAC equipment fasteners, electrical panel work, and general mechanical service where metric hex fasteners are encountered. The 1.3 MM to 10 MM size range covers the most common metric socket head cap screw sizes found in equipment manufactured to metric standards. The included holder keeps all 10 keys organized and accessible without disturbing adjacent tools.

Key Features

• Short arm profile improves access and control in tight or restricted spaces
• 20-degree ball end angle allows angled fastener engagement while retaining adequate strength
• 8660 nickel chromium molybdenum steel heat-treated to 54-58 HRC for durability
• Manganese phosphate finish tested in 1% saltwater solution for 45 hours for corrosion resistance
• Hex key geometry manufactured to the large end of applicable tolerance range for a tighter fit in fasteners
• Dual tolerance measurement - point-to-point and side-to-side - for dimensional accuracy and consistency
• Self-aligning holder slots keep all keys facing forward for fast, single-hand retrieval

Compatibility

Designed for use with standard metric socket head cap screws and hex-drive fasteners in the 1.3 MM to 10 MM range, as commonly found in mechanical equipment, HVAC components, and general trade applications.

Installation Notes

No installation is required for hand tools. Before servicing equipment, follow all relevant lockout/tagout procedures and de-energize or shut off any systems involved. Select the correct key size before applying torque to avoid fastener damage. Store keys in the provided holder when not in use to maintain organization and prevent loss.