SPEEDAIRE Disc Nut: Mfr Part # PN21AA645G, Disc Nut
The SPEEDAIRE Disc Nut (Mfr Part # PN21AA645G) is an air tool replacement part designed for compatibility with Grainger Part # 21AA91. This disc nut serves as a direct replacement component for specific pneumatic…
SKU 3G-OTH-167430
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Product Description
The SPEEDAIRE Disc Nut (Mfr Part # PN21AA645G) is an air tool replacement part designed for compatibility with Grainger Part # 21AA91. This disc nut serves as a direct replacement component for specific pneumatic tools, identified by manufacturer part number PN21AA645G.
Frequently Asked Questions
What is the SPEEDAIRE Disc Nut used for?
The SPEEDAIRE Disc Nut is a replacement part for pneumatic tools. It secures abrasive discs or accessories on air-powered grinders and sanders, commonly used in metal fabrication, automotive repair, and general industrial maintenance.
What are the specifications of the SPEEDAIRE Disc Nut?
The SPEEDAIRE Disc Nut has manufacturer part number PN21AA645G and is compatible with Grainger Part # 21AA91. It is classified as an air tool replacement part, specifically a disc nut for pneumatic tool applications.
Where to buy the SPEEDAIRE Disc Nut worldwide?
3G Electric supplies the SPEEDAIRE Disc Nut (PN21AA645G) worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.
How to install the SPEEDAIRE Disc Nut on a pneumatic tool?
To install the SPEEDAIRE Disc Nut, first ensure the tool is disconnected from air supply. Place the disc on the spindle, then thread the disc nut onto the spindle and tighten securely with the appropriate wrench. Always follow the tool manufacturer's torque specifications.
Used in
Common applications for SPEEDAIRESPEEDAIRE Products
3G Electric supplies SPEEDAIRE air tool replacement parts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















