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The DU-BRO Socket Head Cap Screws (Standard) are strong, dependable fasteners designed for a wide variety of RC building needs. Whether you're assembling a new model or replacing older hardware, these screws provide the secure hold and durability your project requires.
Each screw is made from high-quality steel and finished with a black oxide coating. This coating helps prevent rust, gives the screws a clean, professional look, and allows them to thread smoothly into place. The socket (Allen) head design makes installation easy and reduces the chance of stripping, even when tightening in tight or awkward spaces.
These screws are commonly used for:
Mounting engines and motor plates
Installing servos and electronics
Securing landing gear blocks
Attaching control horns and linkages
General workshop, robotics, and custom mechanical projects
Because socket head cap screws can be tightened firmly without slipping, they're a favorite choice among RC hobbyists who want strong and reliable hardware. Their consistent size and clean threading make them easy to work with on glow, gas, and electric models.
Each package includes 4 screws 4-40 x 1-1/2", making it convenient to keep extras on hand for repairs, upgrades, or new builds. With DU-BRO's reputation for precision and quality, you can trust these cap screws to deliver long-lasting performance in any application.
SKU Number: DUB314
Socket Head Cap Screws
Socket head cap screws use a recessed hex drive and a cylindrical head, giving a strong grip for an Allen wrench and a clean finished look where the head shows. In alloy steel, they hold up well to repeated assembly on engine mounts, control fittings, and other stressed joints.
Sizes and Lengths
This category carries alloy socket head cap screws in SAE threads such as 2-56, with lengths ranging from 1/4 inch up through 1 inch. Each length is listed in a small pack, generally four or six pieces, which suits the handful a mount or fitting usually needs. Alloy steel gives these screws more strength than a plain steel screw of the same size, which matters where a joint is torqued down and taken apart repeatedly.
Choosing the right length keeps the screw fully engaged in the thread without bottoming out or leaving too much sticking through.
Look through the size listings above to find the screw you need.
 "Socket Head Cap Screw Alloy, 6-32 x 2.0\" Qty 6")
 "Socket Head Cap Screw Alloy, 6-32 x 2-1/2\" Qty 4")
 "Socket Head Cap Screw Alloy, 8-32 x 5/16\" Qty 6")
 "Socket Head Cap Screw Alloy, 8-32 x 3/8\" Qty 6")
 "Socket Head Cap Screw Alloy, 8-32 x 1/2\" Qty 6")
 "Socket Head Cap Screw Alloy, 8-32 x 5/8\" Qty 6")
 "Socket Head Cap Screw Alloy, 8-32 x 3/4\" Qty 6")
 "Socket Head Cap Screw Alloy, 8-32 x 7/8\" Qty 6")
 "Socket Head Cap Screw Alloy, 8-32 x 1\" Qty 6")
 "Socket Head Cap Screw Alloy, 8-32 x 1 1/4\" Qty 6")
 "Socket Head Cap Screw Alloy, 10-32 x 3/8\" Qty 6")
 "Socket Head Cap Screw Alloy, 10-32 x 1/2\" Qty 6")
 "Socket Head Cap Screw Alloy, 10-32 x 5/8\" Qty 6")
 "Socket Head Cap Screw Alloy, 10-32 x 3/4\" Qty 6")
 "Socket Head Cap Screw Alloy, 10-32 x 1\" Qty 6")
 "Socket Head Cap Screw Alloy, 10-32 x 7/8\" Qty 6")
 "Socket Head Cap Screw Alloy, 1/4-20 x 1/2\" Qty 6")
 "Socket Head Cap Screw Alloy, 1/4-20 x 3/4\" Qty 6")
 "Socket Head Cap Screw Alloy, 1/4-20 x 7/8\" Qty 6")
 "Socket Head Cap Screw Alloy, 1/4-20 x 1\" Qty 6")
 "Socket Head Cap Screw Black Oxide plated, 2-56 x 3/4\", 4-Pack")
 "Du-Bro Socket Head Cap Screw Black Oxide plated, 2-56 x 1/2\", 4-Pack")
 "Du-Bro Socket Head Cap Screw (Standard), 4-40 x 3/4\" 4-Pack")
 "Socket Head Cap Screw Alloy, 10-32 x 1-1/4\" Qty 6")
 "DU-BRO 4-40 x 1-1/2\" Socket Head Cap Screws - Standard Black Oxide RC Hardware 4PK")