Universal
Rainbow Lock Nut - Fits D3, D4, D4SE
Rainbow Lock Nut - Fits D3, D4, D4SE
SKU:H526B*
Low stock: 4 left
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Shipping Information
Shipping Information
We offer free standard shipping on eligible orders of $100 or more within the 48 contiguous United States. Eligibility is calculated on the merchandise subtotal after discounts and before tax.
Most in-stock orders using standard shipping are processed within 1-5 business days, and most arrive 2-11 business days after they are placed. Backordered and special-order items may take longer. Expedited UPS Ground is available at checkout for an extra charge, including on orders that qualify for free standard shipping. See our Shipping Policy for details.
Returns & Exchanges
Returns & Exchanges
Need to return an item? We’re happy to help. Eligible items may be returned by requesting authorization within 35 days of delivery. Once approved, your return must reach us within 21 days.
Return eligibility
Items must be unused, in new condition, and include their original packaging and all accessories. Machines that use water cannot be returned once unboxed, unless defective upon arrival.
Shipping and refunds
For non-defective returns, customers cover return shipping. Original shipping charges are nonrefundable. If your order included free shipping, our actual outbound shipping cost will be deducted from your refund. Eligible returns have no restocking fee.
Received a defective item?
Contact us so we can help arrange a prepaid return label and replacement.
Please review our Return & Refund Policy for complete details and exclusions.
Warranty Information
Warranty Information
All products sold by Vacuums and More come with the manufacturer's warranty. Warranty terms vary by brand and product.
With 35 years of industry experience, we stand behind every product we sell. Contact us for warranty support.
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Rainbow Lock Nut - Fits D3,...
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Product details
H526B is the lock nut used on the Rainbow D3, D4 and D4SE. A lock nut differs from a plain one in that it resists backing off under vibration, which is exactly what is asked of it inside a machine whose motor runs at high speed for its entire life.
The practical rule with any lock nut is that it is a single-use item. The feature that gives it its grip deforms the first time it is torqued down, so a reused nut holds far less well than a new one - a poor thing to trust on a joint that is buried and hard to get back to.
Order one whenever a repair takes you into the assembly it secures, and close the machine up with a fresh nut rather than the one that came out.
