Product Overview
The Stanley Proto J5239-30W is a 3/8-inch drive Torx bit socket designed for use with T30 Torx fasteners. This tool features a two-piece design, allowing for the replacement of worn bits, extending the life of the socket. It is engineered for durability and precision in various fastening applications.

Image: The Stanley Proto J5239-30W 3/8-inch Drive Torx Bit Socket, featuring a chrome-plated socket base and a dark grey T30 Torx bit extending from the center.
Setup
This Torx bit socket is designed for quick and secure attachment to any standard 3/8-inch drive ratchet, breaker bar, or torque wrench.
- Select the Correct Drive Tool: Ensure you are using a tool with a 3/8-inch square drive.
- Attach the Socket: Align the square opening on the base of the J5239-30W socket with the drive tang of your ratchet or wrench. Push the socket firmly onto the drive tang until it clicks into place or is securely seated.
- Verify Connection: Gently pull on the socket to ensure it is securely attached and will not accidentally detach during use.
Operating Instructions
The J5239-30W Torx bit socket is used for installing or removing fasteners with a T30 Torx head.
- Identify Fastener Size: Confirm that the fastener you intend to work with has a T30 Torx head. Using the incorrect size can damage both the fastener and the bit.
- Engage the Fastener: Place the T30 Torx bit squarely into the head of the fastener. Ensure the bit is fully seated to prevent cam-out and damage.
- Apply Force:
- For tightening, turn the drive tool clockwise.
- For loosening, turn the drive tool counter-clockwise.
- Remove the Socket: Once the task is complete, pull the socket off the drive tool.
Important: Always wear appropriate personal protective equipment, such as safety glasses, when using hand tools.
Maintenance
Proper maintenance ensures the longevity and optimal performance of your Stanley Proto J5239-30W Torx bit socket.
- Cleaning: After each use, wipe the socket clean with a dry cloth to remove dirt, grease, or debris. For stubborn grime, a mild degreaser can be used, followed by thorough drying.
- Inspection: Regularly inspect the Torx bit for signs of wear, such as rounding of the points, cracks, or deformation. Check the socket body for any damage or corrosion.
- Storage: Store the socket in a dry environment to prevent rust. Keep it organized in a tool tray or box to protect it from impacts and prevent loss.
- Bit Replacement: Due to its two-piece design, the Torx bit can be replaced if it becomes worn or damaged. Refer to Proto's official documentation or contact their support for compatible replacement bits and instructions.
Troubleshooting
This section addresses common issues that may arise during the use of the Torx bit socket.
| Problem | Possible Cause | Solution |
|---|---|---|
| Bit slips or cams out of fastener head. |
|
|
| Socket does not attach securely to drive tool. |
|
|
Specifications
| Model Number | J5239-30W |
| Brand | Proto |
| Drive Size | 3/8-inch |
| Torx Size | T30 |
| Bit Length | 5/8-inch |
| Overall Length | 1-23/32-inch |
| Material | Blend (as per product data) |
| Drive System | Torx |
| Finish Type | Brushed |
| Number of Pieces | 2 (socket body and replaceable bit) |
| Item Weight | 2.4 ounces |
| Product Dimensions | 1 x 1 x 1 inches (approximate) |
| UPC | 662679161835 |
| Country of Origin | Made in USA |
Warranty and Support
The Stanley Proto J5239-30W Torx Bit Socket is covered by a Manufacturer's Warranty. For specific details regarding warranty coverage, claims, or technical support, please contact Proto directly through their official website or customer service channels.
It is recommended to retain your proof of purchase for warranty purposes.




