Proto J5550M 50mm 12-point 3/4 Drive Hand Socket

Product Description

The PROTO J5550M is a 50 mm, 12-point hand socket built for heavy-duty fastener work in professional trade and industrial environments. Designed to accept a 3/4 inch drive, this standard-length socket delivers the torque capacity needed for large fasteners found in mechanical, maintenance, and equipment-service applications. The chrome-plated finish resists corrosion and makes the socket easy to clean after use. It is used by mechanics, millwrights, pipefitters, and maintenance technicians who need reliable, well-fitted tooling for large-diameter fastener work.

The J5550M fits standard 3/4 inch drive ratchets, breaker bars, and torque wrenches. Its 12-point design engages a wider range of fastener head positions, reducing ratchet swing arc requirements in tight spaces. Standard length makes it compatible with most common drive extensions and universal joints used in shop and field service work. This socket is suited for industrial maintenance, heavy equipment repair, and commercial mechanical applications where 50 mm fasteners are encountered.

Key Features

• 50 mm socket size for large-diameter fastener applications
• 3/4 inch drive for high-torque wrench and ratchet compatibility
• 12-point design allows more engagement positions and reduced swing arc
• Standard length profile fits most drive extensions and universal joints
• Chrome-plated finish provides corrosion resistance and easy cleaning

Compatibility

Designed for use with standard 3/4 inch drive ratchets, breaker bars, torque wrenches, and extensions in professional hand-tool applications.

Installation Notes

Install and remove by a qualified mechanic or maintenance technician using a properly rated 3/4 inch drive tool. Verify the socket is fully seated on the fastener before applying torque to avoid rounding. Inspect the socket and drive tool for cracks or wear before each use. Do not use impact drivers with this hand socket unless the socket is explicitly rated for impact use.