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100Pcs Zinc Thread Cutting Fasteners provide professional-grade performance for automotive, industrial, and fabrication needs. Designed for 8mm stud size, these fasteners feature a 13mm hex head and 20mm flange diameter for secure, stable fastening. The self-tapping, thread-forming design cuts precise threads without pre-tapping, reducing installation time and ensuring a strong, vibration-resistant hold. A durable zinc coating delivers excellent corrosion protection, extending service life in demanding environments. Ideal for OEM replacement on G.M. #11502507, 11509535, 11514282, these hex flange components are perfect for mechanics, workshops, and DIY users. Suitable for use in machinery, vehicles, metal fabrication, and general hardware applications, this bulk 100-piece set ensures you have reliable, uniform fasteners ready for any project. Built for strength, versatility, and long-lasting durability, they are an essential addition to any professional or home repair kit.
Features:
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).
