Dorman Autograde Prevailing Torque Lock Nut 3/8-16 for Automotive Repair 784-774
Dorman Autograde Prevailing Torque Lock Nut 3/8-16 for Automotive Repair 784-774
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Low stock: 2 left
Shipping & returns
Shipping details
In-stock orders are processed within 48 hours; transit time is additional.
International orders include export processing and customs clearance. Duties, taxes and brokerage are extra; final freight charges may change after remeasurement.
Read the shipping policyReturns
Need help with a return? Request authorization within 30 days of delivery for eligible unused, uninstalled items. See details for exclusions and applicable fees.
Read the full return policyReturn details & how to start
Request return authorization (RMA) within 30 days of delivery for eligible items. Keep items unused and uninstalled, with original packaging and accessories. Electronics, liquids, special orders and other categories are excluded.
Email sales@frsport.com with RETURN and your order number in the subject to request an RMA. Please wait for return authorization before sending your item back.
Wrong part/size or change of mind: a 20% return processing fee applies, plus applicable shipping costs.
Original shipping is non-refundable. For orders shipped free, the actual outbound shipping cost is deducted from the refund. Return shipping is prepaid by the customer.
After payment capture, cancellations and refunds generally incur a 5% processing fee, except for our error, confirmed defects or confirmed carrier loss. The 5% and 20% fees do not stack; only the greater applicable fee applies. Store credit waives the 5% fee, but applicable return fees remain.
Missing, incorrect or transit-damaged items: report within 3 business days of receipt with photos of the product and packaging.
For defective items, contact us for help with the manufacturer's warranty process. The manufacturer decides the claim.
Specifications
Product details shared across all variants.
- Product type
- Nut
- Category
- Motor Vehicle Parts
- Item condition
- New
- Shipping dimensions (L × W × H)
- Shipping weight
- 1.0 lb
- Barcode
- 019495048077
Billable shipping weight; may include dimensional weight.
Prevailing torque lock nuts 3/8-16 by Dorman used to replace worn or damaged factory fasteners on automotive assemblies.
Built to meet the manufacturer's design intent for reliable service, these nuts are manufactured using durable materials and corrosion tested to ensure required strength and longevity.
Key Features
- Thread size 3/8-16 for standard automotive applications
- Prevailing torque design prevents loosening under vibration
- Corrosion tested for enhanced durability
- Manufactured with high-strength materials
- Sold as a 2-piece pack
Benefits
- Secures critical components against vibration-induced loosening
- Restores factory-level clamping force to assemblies
- Reduces risk of repeat repairs due to fastener failure
- Ensures long-term reliability in harsh driving conditions
- Provides cost-effective replacement for OEM hardware
Application
Ideal for mechanics and DIY enthusiasts needing reliable locking hardware for suspension, exhaust, or engine component repairs where vibration resistance is critical.
Fitment Notes
- Universal fit for applications requiring 3/8-16 prevailing torque lock nuts
- Verify thread pitch and diameter against original equipment before installation
Why Choose Dorman?
- Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function
- Backed by a team of professional engineers and quality control specialists in the United States
- Built with quality materials and validated through testing to stand up to daily driving demands
What's in the Box
- 2 Prevailing Torque Lock Nuts
Item Dimensions
- 4.0 inches x 2.7 inches x 1.0 inches
- Weight: 0.1 lbs
