Proto J5312M Deep Hand Socket 12mm 12-point 1/2 Drive

Product Description

The PROTO J5312M is a 12mm deep hand socket designed for 1/2 inch drive ratchets and breaker bars. Built from alloy steel with a chrome-plated finish, it provides corrosion resistance and durability in daily service use. The 12-point design accepts both standard hex fasteners and worn or rounded hardware by offering multiple engagement positions. At 3.25 inches overall length, the deep profile reaches recessed fasteners, long studs, and hardware in tight clearance areas that standard-length sockets cannot access. This socket is suited for automotive, industrial, and mechanical service work performed by professional technicians and tradespeople.

The J5312M fits typical service scenarios where a deep reach is required, such as wheel lug nuts on extended studs, engine hardware, and equipment fasteners recessed behind flanges or panels. The 1/2 inch drive size handles medium to high-torque applications without needing a reducer or adapter. It is a single-unit item packaged individually, making it a straightforward replacement or addition to an existing socket set. The chrome finish also makes surface inspection easy after cleaning.

Key Features

• 12mm socket size with 12-point configuration for multiple fastener engagement positions
• 1/2 inch drive accepts standard ratchets, breaker bars, and torque wrenches
• Deep-length profile at 3.25 inches overall for recessed and long-stud fasteners
• Alloy steel construction rated for high-torque hand tool applications
• Chrome-plated finish resists corrosion and simplifies cleaning
• Meets ASME B107.5 standards for hand socket dimensions and performance

Compatibility

Designed as an OEM-style deep hand socket compatible with standard 1/2 inch drive ratchets, breaker bars, torque wrenches, and extensions used in automotive and industrial service applications.

Installation Notes

Install and remove using a 1/2 inch drive ratchet or breaker bar. Ensure the socket is fully seated on the fastener before applying torque to avoid rounding. Do not use impact drivers with this hand socket unless the tool is rated for impact use. Inspect the socket for cracks or deformation before each use and replace if damage is found.