Knurled Cup Set Screws

South Coast Fasteners, Inc. supplies knurled cup set screws built for extra grip in demanding applications. These screws combine a standard cup point with a knurled edge inside the cup, giving them added bite against the mating surface. That added friction makes a difference, especially in assemblies that deal with constant motion, heavy torque, or continuous vibration.

Knurled cup set screws are ideal for locking parts in place where standard set screws might work loose over time. They are commonly used in motors, pulleys, collars, and mechanical assemblies where staying tight matters. If your build needs lasting hold under pressure, these are the screws built to handle it.

Your Supplier for High-Performance Industrial Fasteners

If you're looking for a trusted supplier of wholesale industrial fasteners, South Coast Fasteners is your solution. Contact our Anaheim, CA office to learn more about our product options and how we can support your project needs. For helpful service, fast order turnaround, and high-quality fasteners in bulk or small batches, choose South Coast Fasteners.

Material Options

South Coast Fasteners stocks knurled cup point set screws in high-performance materials that deliver superior grip, secure torque retention, and resistance to slippage in vibrating applications. These screws are specifically designed for holding power where rotational resistance is key.

Black Oxide Alloy Steel

Black oxide alloy steel combines high tensile strength with a clean, low-glare finish. These set screws are heat-treated to handle heavy torque and high clamping pressure without stripping. The black oxide coating offers mild corrosion resistance for indoor or dry applications while reducing friction during installation. Ideal for motors, pulleys, and assemblies where a secure, vibration-resistant hold is critical.

Available Finishes

Every finish serves a functional purpose for installation environment, corrosion protection, and performance. South Coast Fasteners offers knurled cup point set screws in:

Black Oxide

Black oxide provides a smooth, dark finish with moderate corrosion protection. It’s ideal for machinery, electronics, and equipment installations where appearance, low reflectivity, and friction reduction are important. This finish also enhances lubricity and minimizes seizing during tightening.

Why Choose South Coast Fasteners?

South Coast Fasteners supplies fasteners that meet real-world demands. We offer consistent quality, dependable inventory, and fast service to help keep your projects moving. Whether you are working in equipment assembly, automotive systems, or machinery builds, we have the right fastener for the job.

Order Knurled Cup Set Screws Online Today

South Coast Fasteners makes it easy to get the knurled cup set screws you need, when you need them. Browse our selection online and order with confidence. If you need help with spec matching or bulk quantities, we are here to make sure your hardware holds strong.