Aug 25, 2025 · Below is a detailed hex key size chart showing both metric and imperial measurements. This chart will help you quickly find the right size tool for your project.

Allen wrench (hex key) size chart for long arm and short arm allen wrenches, torx/star keys. Provides dimensions for inch and metric allen wrenches.

Hex keys are designated with a socket size and are manufactured with tight tolerances. As such, they are usually sold in kits that include a variety of sizes. Key length typically increases with size but not …

Hardness: R C 45-53. Max.

Hex key socket sizes chart according to ASME B18.3 standard. Max. Symbols: W = Hexagon Width Across Flats, Y = Hexagon Width Across Corners, R = Minimum Radius of Bend, L = Length of Bit, K …

Inch Series Hexagon Keys ... Applicable Specifications: ASME B18.3. Hardness: RC 45-53.

Nov 23, 2018 · The ultimate guide to Allen wrench conversions at Hand Tool Essentials. Offering both SAE & metric size guides for finding the right substitute hex.

Complete allen key specification charts for imperial and metric hex keys. Download printable PDF references with socket sizes, key dimensions, and torque specifications.

Find a complete list of all hex key sizes made by reputable tool manufacturers and their part numbers. Quickly find a replacement SAE Hex key size SKU from the following brands: Bondhus, Eklind, PB …

Find the right Allen wrench fast with this clear hex key size chart, including SAE to metric conversions and the most common dimensions used in machinery and assembly work.