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Shipping Policy – United States Only
We currently ship exclusively within the United States. We do not offer international shipping at this time. Shipping is available to eligible U.S. addresses only.
When you place an order, we will estimate shipping and delivery dates based on the availability of your items and the shipping options you choose. Depending on the shipping carrier, estimated delivery dates may appear during checkout.
Please note that shipping rates for many of our products are calculated based on weight. Product weights can be found on their respective detail pages. In accordance with our shipping carriers' policies, all weights will be rounded up to the next full pound.
Important: We only accept orders for delivery within the United States. International shipping is not available.
Superior Strength. Long-Lasting Performance. Industrial-Grade Reliability.
Upgrade your fastening hardware with Grade 8 Fine Thread Hex Nuts—engineered for high-stress applications requiring maximum strength, durability, and precision.
Thread Size: 7/16"-20 (Fine Thread) – for a tighter, more secure fit in precision builds
Material: Grade 8 Hardened Steel – designed for heavy-duty applications requiring maximum tensile strength
Finish: Yellow Zinc Plating – offers superior corrosion resistance for extended life in harsh environments
Hex Size: 11/16" – compatible with standard wrenches for easy installation
Dimensions:
Outside Diameter: 25/32"
Inside Diameter: 7/16"
Thickness: 3/8"
Automotive and industrial applications
High-vibration machinery and equipment
Construction, farming, and heavy equipment use
Anywhere you need a strong, vibration-resistant lock with fine threads
Why Choose Grade 8 Hex Nuts?
Built to exceed SAE J995 standards, Grade 8 nuts deliver enhanced load-bearing performance, ideal for securing bolts in high-torque conditions where failure is not an option.
📦 SKU: HXNTS-088
📌 SEO Keywords: 7/16-20 hex nut, grade 8 fine thread nut, yellow zinc plated hex nut, steel locking nut, automotive hex nut, industrial fastener, fine thread nut heavy duty
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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