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The Dorman 3/8-16 Brass Hex Nut is a standard replacement fastener manufactured to specific thread tolerance standards for dependable fitment. Made from brass with a natural finish, it’s corrosion tested through salt spray testing to help ensure resistance to rust and long-term durability.
Designed for multipurpose use, this SAE coarse-thread hex nut can be used in a variety of applications—from automotive repairs to general home and shop projects. It features a flat seat, right-hand (clockwise) thread direction, and is backed by Dorman’s engineering and U.S.-based quality control teams.
Brass construction manufactured to specific thread tolerance standards
Salt spray corrosion tested to help ensure corrosion resistance
Multipurpose use for automotive, home, and general fastening applications
Backed by professional engineers and U.S.-based quality control
Standard hex nut design with flat seat
Type: Hex Nut
Material: Brass
Color: Brass
Finish: Natural
Metric Or SAE: SAE
Grade Type: Standard
Callout Size: Grade 2
Thread Size: 3/8-16
Thread Type: Coarse
Threads Per Inch: 16
Thread Direction: Clockwise (Right)
Thread Diameter: 0.314 in
Inside Diameter: 0.314 in
Height: 0.324 in
Seat Type: Flat
Locking: No
Washer Attached: No
Shouldered End: No
Heat Hardened: No
Packaging Type: Box
Selling Package Quantity UOM: Piece
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).
