Shop Socket Shoulder Cap Screws Online at South Coast Fasteners

South Coast Fasteners, Inc. is your source for socket shoulder cap screws, also known as shoulder bolts, built for alignment, movement, and high-precision applications. Whether you're building fixtures, assembling machines, or designing components with rotational or sliding motion, our shoulder cap screws deliver reliable performance where it matters.

With a cylindrical, unthreaded shoulder between the head and threads, these screws create a smooth bearing surface for parts to rotate or align with accuracy. From tooling setups to automated machinery, socket shoulder cap screws help keep your components positioned, moving, and locked in just right.

South Coast Fasteners Offers Premium Fasteners Designed for High-Level Performance

Use the options below to order top-quality fasteners in the sizes and specifications you need. Questions about our fastener options? Contact our office in Anaheim, CA today, and our team will be happy to assist you. Whether you need repeat bulk orders or one-off small batch purchases, South Coast Fasteners has you covered for all your industrial fastener supplies.

Types of Socket Shoulder Cap Screws

Socket Shoulder Screw, Thermal Black Oxide, Alloy

This precision socket shoulder screw features a thermal black oxide finish that enhances corrosion resistance and wear protection. Its smooth, accurately machined shoulder provides a perfect bearing surface for moving parts. Commonly used in tooling, die sets, machinery, and automation assemblies where alignment and motion precision are vital.

Socket Shoulder Screw, Nylon Patch, Thermal Black Oxide, Alloy

Equipped with a pre-applied nylon patch, this screw offers self-locking capabilities to resist vibration and maintain consistent torque. The thermal black oxide coating provides additional protection against rust and surface wear. It’s an ideal choice for robotics, jigs, and fixtures where secure and repeatable fastening is essential.

Socket Shoulder Screw, Nylon Pellet, Thermal Black Oxide, Alloy

This screw includes a nylon pellet insert that delivers strong resistance to loosening under vibration while maintaining reusability. The black oxide finish provides added corrosion protection and a uniform matte appearance. Commonly used in motion systems, mold assemblies, and industrial automation where consistent alignment is key.

Stainless 18-8 Socket Shoulder Screw

Made from 18-8 stainless steel, this socket shoulder screw provides excellent corrosion resistance and long-term durability. The precision-machined shoulder ensures smooth rotational performance in moving assemblies. It’s widely used in marine hardware, medical devices, and food processing machinery due to its hygienic and rust-resistant properties.

Socket Shoulder Cap Screws - Material Options

South Coast Fasteners stocks socket shoulder cap screws in materials that support high mechanical load, precision alignment, and corrosion resistance.

Alloy Steel

Strong, dependable, and suited for high-load mechanical environments. This material is ideal for precise moving parts, joints, and machines where tight tolerances and strength matter.

Stainless Steel 18-8 (304)

A corrosion-resistant option for general-use, clean finish, and long-lasting performance. Perfect for equipment exposed to moisture, light chemicals, or where aesthetic finish matters.

Socket Shoulder Cap Screws - Available Finishes

South Coast Fasteners offers these durable and performance-based finishes to match your project needs. Each coating supports the mechanical reliability and longevity of socket shoulder screws.

Nylon Patch

A pre-applied thread locking solution that increases resistance to vibration loosening. Ideal for assemblies that need repeated installation and removal while maintaining holding power.

Thermal Black Oxide

Heat-treated to penetrate deeper than standard black oxide, this finish adds mild corrosion resistance and wear protection while maintaining the screw’s critical dimensions and smooth fit.

Why Choose South Coast Fasteners?

South Coast Fasteners understands that shoulder cap screws are not just another bolt. They are a key part of keeping your systems running smoothly. That is why we maintain a deep inventory, trusted materials, and a team that knows these products inside and out. Whether it is for a single job or a full production run, we have the stock and expertise to support you.

Shop Socket Shoulder Cap Screws Online at South Coast Fasteners

South Coast Fasteners makes it easy to get the socket shoulder cap screws you need, when you need them. Browse our inventory online or reach out for help with spec matching, sizing, or custom solutions. We will help you get it right the first time.