HASAOMOI Woodruff Key Assortment Kit 530pcs Metric (37 Sizes) — High‑Hard Carbon Steel, Case

The HASAOMOI 530-piece metric Woodruff key assortment supplies a full range of precision keys (37 sizes) stored in a durable case for fast selection and reliable mechanical fits.

This kit is built for mechanics, fabricators, and DIYers who need an organized selection of Woodruff and feather keys for maintenance, repair, and assembly tasks. All components are manufactured from high-hard carbon steel for wear resistance and consistent performance; the set covers a broad size range so you can match the exact key profile without improvisation. The clear, compartmented plastic case keeps parts visible and reduces downtime searching for the right size.

Which sizes and quantities are included in this kit?

The assortment contains 37 metric sizes distributed across 530 total pieces, combining half-moon Woodruff keys and round-ended feather keys to address common shaft and hub applications. Sizes span from small to large (approximately 8 mm up to 30 mm) so you can accommodate varied equipment specifications.

• 530 pieces total: mixed Woodruff and round-ended feather keys
• 37 distinct metric sizes for precise fits
• Size coverage roughly 8 mm through 30 mm for versatility
• Organized by size in a compartmented storage case

How does material and finish affect performance?

Each key is formed from high-hard carbon steel to offer strength under shear loads and resistance to deformation. The material provides better long-term service in rotating assemblies than softer alloys, while a controlled finish ensures consistent seating inside the keyway.

• High-hard carbon steel for improved durability and load resistance
• Precision-formed profiles for repeatable seating and fit
• Consistent finish to reduce burrs and improve installation
• Suitable for common mechanically loaded connections

What features make the storage case practical on the job?

The kit includes a rugged plastic case with labeled compartments so sizes remain separated and immediately accessible. Transparent lid and fixed dividers let you inventory parts at a glance and keep the workbench tidy during repairs.

• Clear, hinged lid for quick visual checking of contents
• Individual compartments to prevent mixing of sizes
• Compact footprint fits on a shelf, in a toolbox, or in a service van
• Secure latches keep parts contained in transit

How will this kit support common workshop and vehicle repairs?

Woodruff and feather keys are used to lock hubs, pulleys, gears, and couplings to shafts; having the correct size on hand prevents makeshift fixes and reduces machine downtime. This assortment lets you replace damaged keys quickly and match OEM key dimensions for safer reassembly.

• Fits typical automotive, agricultural, and industrial shafts and hubs
• Enables fast replacement of worn or broken keys during service
• Reduces need for on-the-spot fabrication or improvisation
• Useful for prototyping, restoration, and preventive maintenance

Who is this for: The HASAOMOI 530-piece metric Woodruff key set is intended for professional mechanics, industrial maintenance technicians, hobby machinists, and serious DIY homeowners who require a broad, organized selection of keys for shaft-to-hub assemblies. If you frequently service rotating equipment or restore vintage machinery where exact key sizes matter, this kit helps you work faster and with greater confidence.