Knurled Cup Set Screws Available at South Coast Fasteners

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.

South Coast Fasteners Combines Industrial Quality with Everyday Affordability for Every Project

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.

Knurled Cup Set Screws Offered at South Coast Fasteners

Knurled Cup Point Socket Set Screw, Thermal Black Oxide, Alloy

This knurled cup point socket set screw is constructed from high-strength alloy steel and finished with a thermal black oxide coating for added corrosion resistance. The knurled edge increases grip and holding power, while the cup point ensures positive engagement with mating surfaces. It’s widely used in heavy-duty machinery, rotating assemblies, and applications requiring superior vibration resistance.

Knurled Cup Point Socket Set Screw, Zinc CR+3 Bake

Featuring a CR+3 baked zinc finish, this screw provides excellent corrosion protection and uniform coating adhesion. The knurled design enhances torque control, ensuring secure installation even under heavy load. Commonly used in manufacturing equipment, automation systems, and metalworking assemblies.

Loc Wel Knurled Cup Point Socket Set Screw, Black Oxide

This Loc Wel screw combines a knurled cup point with a black oxide finish for high grip and reliable locking under vibration. The surface treatment reduces friction while improving wear resistance in repeated use. It’s ideal for securing gears, collars, and couplings in industrial and power transmission equipment.

Knurled Cup Set Screws - 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.

Knurled Cup Set Screws - 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.

Zinc CR+3 Bake

Zinc CR+3 Bake is a corrosion-resistant electroplated finish that provides durable protection and a clean, bright appearance. The CR+3 (trivalent chromium) formulation is environmentally friendly while maintaining excellent rust prevention.

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.

Shop Knurled Cup Set Screws Online at South Coast Fasteners

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.