Tekton Inc KLX91103 Flat End Hex L-key Set 13 Piece

Product Description

The TEKTON INC KLX91103 is a 13-piece SAE flat end hex L-key set with an integrated holder, covering sizes from 0.050 inches through 3/8 inches. The keys are manufactured from 8660 nickel chromium molybdenum steel, heat-treated to 54-58 HRC for a hard but non-brittle tool. A manganese phosphate finish provides corrosion resistance. Keys are sized toward the large end of the applicable tolerance range for a tight fit in fasteners with minimal slop. Tolerances are measured both point-to-point and side-to-side to maintain dimensional accuracy across the set. Laser markings and stamped markings on most sizes allow quick size identification.

This set is suited for mechanical, HVAC, electrical, and plumbing trade work where SAE hex fasteners are common. The extended key length increases leverage for driving fasteners in confined or high-resistance applications. The included holder organizes all 13 keys facing forward for direct access, and can also be oriented flat for low-profile storage in a toolbox or service bag. Self-aligning key slots guide each L-key into consistent alignment within the holder.

Key Features

• 13 SAE sizes from 0.050 inches to 3/8 inches in a single set
• 8660 nickel chromium molybdenum steel heat-treated to 54-58 HRC
• Tight-tolerance geometry sized toward the large end of applicable range to reduce fastener slop
• Dual tolerance measurement: point-to-point and side-to-side for dimensional consistency
• Manganese phosphate corrosion-resistant finish, tested in 1% saltwater solution for 45 hours
• Integrated holder with forward-facing and flat low-profile orientation options
• Slightly chamfered edges on sizes 5/64 inches and larger for optimized fastener engagement

Compatibility

Designed for use with standard SAE hex socket fasteners. Suitable for general mechanical service, HVAC equipment, plumbing fixtures, and electrical enclosures using SAE hex drive fasteners.

Installation Notes

Use by hand tool trade professionals and knowledgeable DIYers for driving and removing hex socket fasteners. Select the correct key size before applying torque to avoid rounding fastener sockets. Do not use extension cheater bars on the short arm of the L-key, as this can exceed the torsional limits of the fastener. Store keys in the holder when not in use to maintain organization and protect the finish.