Description

Key Features

Better Fastener Grip

DirectTorque technology helps the socket hold fasteners more securely and reduces the chance of rounding corners when you are leaning on stubborn hardware.

Chrome Vanadium Build

The polished chrome vanadium finish is built for repeated shop and garage use, with added resistance to chipping and flaking.

Deep Socket Reach

This DeWalt deep socket gives you extra clearance for nuts on longer studs, making it a better fit for automotive and mechanical fastening than a shallow socket.

Overview

The DeWalt DWMT70840OSP 3/8-In. (9.5mm) Drive 6-Point 1/4-In. (6.4mm) Standard (SAE) Deep Socket is an individual hand socket built for turning 1/4 inch SAE fasteners with a 3/8 inch drive ratchet or wrench. This is a deep socket designed for fastening and removal work where standard-length sockets may not reach over exposed studs. Model Number: DWMT70840OSP.

What matters here is the combination of a 6-point opening and DeWalt DirectTorque technology. On the job, that means the socket is built to grip the flats of the fastener more effectively, which helps reduce rounding on worn, rusty, or over-tightened nuts and bolts. If you do brake work, engine bay repairs, equipment service, or general assembly, that is the kind of detail that saves headaches fast.

The deep socket format is the real advantage over a standard shallow socket. It gives you extra reach when the nut sits down a stud or when surrounding parts make access tight. For mechanics and serious DIY users, that makes this socket more useful in places where a regular socket simply bottoms out too early.

DeWalt also built this socket with a polished chrome vanadium finish. That finish helps protect against chipping and flaking and holds up well in toolboxes, shop drawers, and regular use around oil, grime, and general garage conditions. Hard stamped markings make size identification easier when you are sorting through sockets instead of stopping to second-guess what you grabbed.

The knurled control ring adds another practical touch. When your hands are slick or you are starting a fastener by hand before putting it on the ratchet, that texture gives you more control than a fully smooth body. It is a small feature, but it is one of those things you appreciate every time you use it.

This DeWalt socket is best suited for mechanics, technicians, garage users, and anyone building out a dependable SAE socket lineup one size at a time. If you already run a 3/8 inch drive ratchet setup and need a 1/4 inch deep socket for longer studs or recessed hardware, this is the right kind of single replacement or fill-in piece to keep in the drawer.

Reach Hardware on Longer Studs

A deep socket earns its keep when a standard socket cannot reach the nut cleanly. This one is sized for 1/4 inch SAE fasteners and built for 3/8 inch drive ratchets, making it a practical fit for service work, assembly, and general repair.

• Deep socket profile provides added clearance over protruding studs
• 6-point design is better suited for secure contact on hex fasteners

What’s in the Box

• (1) DeWalt DWMT70840OSP Deep Socket

Key Specifications

Product Type	Socket
Drive Size	3/8 in
Socket Size	1/4 in
Measurement System	SAE
Point Count	6-Point
Socket Depth	Deep
Individual or Set	Individual
Piece Count	1

Compatibility

Drive Interface

Fits standard 3/8 in drive ratchets, extensions, and related hand tool accessories.

Fastener Fit

Designed for 1/4 in SAE hex fasteners.

Built For

Automotive Mechanical Repair Garage Maintenance Equipment Service General Fastening DIY / Hobbyist

Pro Tip

Keep a deep socket like this in the drawer for any nut that sits on a longer stud. A shallow socket may grab the first few threads, but the deeper body lets you seat fully on the fastener before you put torque on it.

Tool Nut’s Take

Tool Nut’s Take

DeWalt DWMT70840OSP Is the Kind of Socket You Buy Once and Keep

The DeWalt DWMT70840OSP 3/8-In. (9.5mm) Drive 6-Point 1/4-In. (6.4mm) Standard (SAE) Deep Socket does exactly what a good single socket should do: fit right, grip well, and hold up in real shop use.

• Who it’s for: Anyone filling out a 3/8 inch drive SAE socket set, especially mechanics and garage users working around longer studs.
• Why it stands out: DirectTorque design, deep reach, and a chrome vanadium build make it more than just a basic replacement socket.
• Worth knowing: This is an individual socket, not a set, so it is best for replacing a missing size or building a custom lineup piece by piece.

Common Questions

• Is this a deep socket or a shallow socket? This is a deep socket.
• What drive size does it use? It uses a 3/8 in drive.
• What fastener size is it made for? It is sized for 1/4 in SAE fasteners.
• Is this sold as part of a set? No. It is sold as an individual socket with a piece count of 1.