Proto 3/8" Drive Deep Black Oxide Socket 7/8" - 12 Point J5028B-SBD

Proto's J5028B-SBD (also identified as model J5028B) is a professional-grade 3/8 inch drive 7/8 inch deep socket engineered for heavy-duty industrial and automotive maintenance. This high-performance tool features a 12-point configuration and a deep-well design, making it essential for reaching fasteners on long bolts or in recessed areas where standard sockets cannot reach. Finished in a specialized black oxide, the J5028B-SBD provides superior corrosion resistance and a non-reflective surface, ideal for harsh environments where a chrome finish might chip under stress. By choosing this socket, you benefit from Proto's advanced TorquePlus technology, which maximizes torque delivery while protecting fastener integrity.
Key Features
Features a 7/8 inch fractional (SAE) size with a 3/8 inch drive end, ensuring compatibility with all standard 3/8 inch ratchets, extensions, and breaker bars.
Deep-well profile with an overall length of 2-3/4 inches, allowing for easy access to nuts on long protruding bolts and deep-seated fasteners.
12-point socket geometry facilitates easier engagement with fasteners, allowing for effective rotation even at a thirty degree offset in cramped mechanical areas.
Engineered with the TorquePlus internal design, which shifts contact stress away from the fastener corners and onto the flats to prevent rounding and extend hardware life.
Industrial black oxide finish provides a durable, non-reflective layer of protection against rust, chemicals, and industrial fluids.
Precision-forged from high-strength alloy steel to ensure reliable performance and a long service life under professional mechanical loads.
Total product weight of 0.38 lbs (approximately 0.172 kg) offers a solid, durable feel for high-torque manual applications.
Manufactured to meet or exceed ASME B107.110-2012 and SAE AS954E technical standards for professional tool safety and performance.