54021 1/4"-28 Male to 1/4"-20 Male Adapter for Aircraft/Airplane Drills, Rotary Tools - Convert Internal 1/4"-28 Thread to 1/4"-20 Male Thread for R-Type Quick Change Disc Holders (1"-3")

The Pro-Graad 54021 Thread Adapter is the professional solution for mechanics, fabricators, and aviation technicians who need to bridge the gap between specialized aircraft drills and standard quick-change accessories. Whether you are working in tight quarters with a right-angle drill or performing precision surface conditioning, this adapter provides the necessary conversion to get the job done. Constructed from industrial-grade carbon steel, our adapter is designed to withstand the high torque and RPM of pneumatic tools. The specialized blackening treatment provides an extra layer of protection against rust and corrosion, ensuring that the threads remain clean and easy to use even after years of service in a busy shop environment. Don't let thread mismatch slow down your workflow. This adapter allows for the immediate mounting of 1" to 3" disc holders, including popular Roll Lock and Type R/S Quick Change systems. It is the perfect companion for abrasive discs, sanding pads, and polishing wheels, giving you the flexibility to switch between tasks in seconds.

• [IN THE BOX]: 1 each Pro-Graad 54021 1/4”-28 Male Threaded x 1/4”-20 Male Threaded Adapter for use on Airplane / Aircraft Style Drill & Similar 1/4-28 internal threaded tools. Compatible for use with your 1/4"-28 Female Threaded Tool and 1” – 3” R or S Type Quick Change Disc Pad Holders. NOTE: Quick Change Disc Pad Holder and Tool are NOT Included. This item is for the ADAPTER ONLY.
• [COMPATIBILITY]: Designed for use on Airplane / Aircraft Style Drill Tool which have a 1/4”-28 Female Thread. The adapter will convert your tool to 1/4-20 male thread compatible for mounting Roll Lock, Type R, TR, Type S, TS, TSM and Type P Style Quick Change Disc Holder Pads.
• [DURABILITY]: Precision crafted with durable carbon steel and blackening steel quenching treatment, this adapter is engineered for exceptional durability and extended longevity. Made for Airplane / Aircraft style tools, ensures a reliable and long-lasting performance when paired with 1” – 3” Quick Change Style Pad Holders.
• [APPLICATION]: Broaden the capabilities of your 1/4"-28 internal threaded tool using this Pro-Graad Adapter designed for use with Quick Change style holders. This adapter expands your Polisher Buffer tool’s potential, enabling the use of 1" to 3" quick-change style abrasive and finishing discs on your tool. Overcoming limitations posed by the standard offering with the tool, this adapter allows the use of 1” – 3” diameter pads, extending versatility, and unlocking additional capabilities for your projects.
• [PRODUCT GUARANTEE]: All Pro-Graad products are made with quality materials, which exceed industrial grade standards. We are driven to deliver high-quality, high-performing products to the end user. This is why we stand behind our Product Guarantee. If you are not satisfied with the product, simply return your purchase within 30 days, and we will replace or refund your order. Pro-Graad is a USA Company with US Based Customer Support.