DORMAN/AUTOGRADE 247-013 Torque Lock Nut Thread 019495246237 Grade 8 7/16-20 3/8

( Brand: Dorman/autograde ), ( Manufacturer Part Number: 247-013 ), ( Manufacturer Warranty: 1 Year ), ( California Prop 65 Warning: This Product Contains Chemicals Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. ), ( UPC: 019495246237 ), ( Type: Hardware, Fasteners And Fittings )

Review DORMAN/AUTOGRADE Torque Lock Nut grade Thread Size 7/16-20 Inch Height 3/8

The Dorman/Autograde 247-013 Torque Lock Nut is a crucial automotive component designed to provide enhanced safety and security for various applications where a standard nut may not be sufficient. This torque lock nut, featuring a grade thread of 7/16-20 and a 3/8 inch hex head, is engineered to deliver superior torque retention and resistance to vibrational loosening.

The nut's most distinctive feature is its unique design, which includes a tapered, serrated locking mechanism. When tightened with the appropriate torque wrench, the serrations bite into the bolt threads, creating a positive lock that helps maintain the desired torque setting. This feature is particularly important for critical automotive components where precise torque control is essential, such as wheel studs, engine bolts, and transmission mount bolts.

Constructed from high-strength materials, the Dorman/Autograde 247-013 Torque Lock Nut is capable of withstanding the rigors of automotive use, even under extreme conditions. Its corrosion-resistant finish ensures that it remains protected from the elements, extending its lifespan and enhancing its overall durability.

Installing the Dorman/Autograde 247-013 Torque Lock Nut is a straightforward process. Simply replace the standard nut with this torque lock nut on the appropriate bolt and tighten it to the recommended torque specification using a torque wrench. The serrated design and the torque wrench's click-point feedback will ensure that the nut is securely tightened to the correct torque setting, providing you with peace of mind and the confidence that your vehicle's components are safely secured.

In summary, the Dorman/Autograde 247-013 Torque Lock Nut is a high-performance, corrosion-resistant component designed for applications where precise torque control and vibrational resistance are essential. Its serrated locking mechanism ensures that the nut remains securely tightened to the recommended torque setting, providing enhanced safety and reliability for your vehicle.

The Dorman/Autograde 247-013 torque lock nut is a part designed to provide additional security to bolts by preventing them from loosening due to vibration or shock. This part is particularly useful in applications where the bolted connection needs to maintain its integrity under challenging conditions. Here are some pros and cons of buying this part.

1. Enhanced Security: Torque lock nuts ensure that the nut stays tightened at the specified torque even after the application of vibration or shock. This can help prevent the loosening of bolts, which can lead to safety concerns and potential damage to the system.

2. Cost-Effective: Compared to other methods of preventing bolt loosening, such as using locking washers or thread locking adhesives, torque lock nuts can be a more cost-effective solution. They do not require any additional materials or tools beyond the nut itself.

3. Easy to Install: Torque lock nuts can be installed using standard tools, such as a wrench or socket. They do not require any special skills or expertise, making them a convenient option for DIYers and professionals alike.

1. Limited Applications: Torque lock nuts may not be suitable for all applications. They are most effective in situations where there is a significant amount of vibration or shock, such as in automotive or industrial applications. In applications where the bolted connection does not experience significant stress, a standard nut may be sufficient.

2. May Require Additional Torque: To ensure that the torque lock nut functions properly, it may be necessary to apply additional torque to the nut beyond what is required for the bolt itself. This can make the installation process more time-consuming and challenging.

3. May Not Be Reusable: Some torque lock nuts are not designed to be reusable. This means that they must be replaced each time the nut is removed and reinstalled. This can add to the cost and inconvenience of using torque lock nuts in certain applications.

The Dorman/Autograde 247-013 torque lock nut is a useful part for applications where bolted connections need to maintain their integrity under challenging conditions. Its cost-effectiveness, ease of installation, and enhanced security make it a compelling option for many applications. However, it may not be suitable for all applications, and its limited reusability and potential requirement for additional torque are important considerations. Ultimately, the decision to use a torque lock nut will depend on the specific requirements of the application and the preferences of the user. If the application involves significant vibration or shock, the benefits of using a torque lock nut may outweigh the potential drawbacks.

Details:

part #: 247013 prices

• $23.79-$50.00

specifications toolssupp:

• brand: Dorman/autograde
• mpn: 247-013
• manufacturer warranty: 1 Year
• california prop 65 warning: This Product Contains Chemicals Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm.
• upc: 019495246237
• type: Hardware, Fasteners And Fittings

offer toolssupp:

• availability: In Stock
• started: March 28, 2026
• quantity: 2
• sold: 0
• options: Ship-to-home

shipping toolssupp:

• cost: $0.00
• transit: 4-9 Days
• type: Fixed
• service: Economy, Standard, Expedited, Overnight
• class: Economy, Standard, Expedited, One-day

payments toolssupp:

• wallet: Google-pay
• other
• credit card: Visa

returns toolssupp:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

seller toolssupp:

• # reviews: 130581
• rating: 99.5%
• city: Colmar, Pennsylvania

general toolssupp:

• condition: New
• Motors > Automotive Tools Supplies > Other Auto Tools Supplies

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