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Description:
The 1/4"-20 Aluminum Ribbed Rivet Nut (Part #055-229) provides a strong, reliable threaded insert for thin materials where access is limited to one side of the panel. Manufactured from lightweight aluminum, it offers corrosion resistance while maintaining sufficient strength for many automotive, fabrication, and general fastening applications.
The ribbed body design helps prevent the rivet nut from spinning once installed, ensuring a secure hold in sheet metal, plastics, and other thin materials. Its open-end configuration allows for versatile blind installation, while the 1/4"-20 coarse thread provides a dependable anchor point for bolts and machine screws.
Features:
Lightweight aluminum construction with corrosion resistance
Ribbed body helps prevent spinning after installation
Open-end design suitable for blind mounting applications
Creates strong internal threads in thin materials
1/4"-20 coarse thread compatible with standard fasteners
Ideal for automotive, fabrication, and equipment assembly
Product Specifications:
Part number: 055-229
Size: 1/4"-20
Thread type: Coarse
Type: Ribbed threaded rivet nut
Material: Aluminum
System of measurement: Inch
Head style: Open End
Body diameter: 0.390 in
Head diameter: 0.500 in
Head height: 0.030 in
Hole size: 25/64 in (0.3906 in) (+0.006 / −0.000)
Length: 0.580 in
Grip range: 0.165 – 0.260 in
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
