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The CAPTIVEAIRE 99904A103 is a durable 3/8-16 serrated-flange locknut. This essential fastener provides reliable locking action in HVAC applications. It fits standard bolt sizes and is suitable for various assemblies and installations.
This locknut is ideal for securing components in HVAC systems, ensuring stability and reducing the risk of loosening over time.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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