Shop Dowel Pins Online at South Coast Fasteners
South Coast Fasteners, Inc. offers dowel pins that keep assemblies perfectly aligned with accuracy and strength. When precision and slip-free connections matter, these pins are the go-to solution for maintaining consistency in every build. Trusted across automotive, manufacturing, aerospace, and tooling industries, dowel pins ensure components fit together exactly as intended and stay secure under load and vibration.
Used in molds, dies, machinery, and production equipment, dowel pins deliver reliability where alignment and positioning are critical. South Coast Fasteners stocks high-quality dowel pins in multiple materials, diameters, and tolerances to suit any application. Whether for maintenance, fabrication, or OEM production, our dowel pins provide the precision and durability professionals depend on to keep systems performing at their best.
Get Premium Fasteners for Every Job at Competitive Prices from South Coast Fasteners
Use the options below to find the fasteners you need in the quantities required for your application. Questions? Contact us today, and our team will gladly assist you in finding the best fastening solutions for your requirements. With South Coast Fasteners, you can count on helpful support, competitive pricing, and top-quality products for all your fastener requirements.Types of Dowel Pins
Through Hardened Dowel Pins (Alloy Steel)
Through hardened dowel pins are designed for maximum strength and dimensional stability. Heat-treated through their entire cross-section, they deliver exceptional hardness and resistance to wear. These pins are standard for heavy-duty assemblies, fixtures, and machinery where precision alignment is non-negotiable. Used widely in tooling, jigs, and equipment frames, they hold position under vibration, load, and thermal stress without deformation.
Pull Out Dowel Pins (Alloy Steel)
Pull out dowel pins include a small threaded or hollow feature that allows easy removal from precision assemblies. They’re a practical solution for fixtures or machinery that need periodic disassembly or calibration. Despite their removability, they maintain secure, tight fits during operation, ensuring both precision and serviceability in one component.
Oversize Dowel Pins (.001 Oversize, Alloy Steel)
Oversize dowel pins are slightly larger than standard, designed for applications where existing holes have worn or expanded over time. Their interference fit re-establishes proper alignment and eliminates play between mating parts. These pins are essential for rebuilding or restoring machinery and precision equipment without costly reboring or replacement.
Stainless 18-8 Dowel Pins
Stainless 18-8 dowel pins are a dependable choice for applications where moisture or mild corrosive exposure is a concern. They combine tensile strength with excellent resistance to rust, making them ideal for marine fittings, outdoor assemblies, and sanitary manufacturing environments. Their clean finish and non-magnetic nature make them as durable as they are versatile.
Stainless 316 Dowel Pins
Stainless 316 dowel pins deliver maximum corrosion protection for the toughest environments. Enhanced with molybdenum, they resist chlorides and harsh chemicals that would degrade ordinary stainless. They’re relied on in marine, pharmaceutical, and chemical processing industries where long-term integrity is critical and replacement is not an option.
Stainless 416 Dowel Pins
Stainless 416 dowel pins are hardened for wear resistance while maintaining excellent machinability. They provide precise, repeatable alignment in mechanical systems, tooling, and assemblies subject to constant motion. Their fine surface finish and dimensional consistency make them a preferred choice in precision equipment and automotive applications.
Metric Through Hardened Dowel Pins (DIN 6325, Alloy Steel)
Metric through hardened dowel pins built to DIN 6325 standards are designed for precision fit and strength. Fully hardened alloy construction gives them superior fatigue resistance under repeated stress. They’re a fixture in European and international equipment, delivering the reliability engineers expect from standardized DIN components.
Metric Pull Out Dowel Pins (DIN 7979D, Alloy Steel)
Metric pull out dowel pins to DIN 7979D specifications combine precise fit with practical serviceability. The extraction feature allows them to be removed cleanly without damaging housings or fixtures. They’re widely used in modular tooling, production lines, and machinery that demands both precision and easy maintenance.
Metric Stainless A2 (18-8) Dowel Pins (DIN 7, Oversize)
Metric A2 stainless dowel pins in DIN 7 oversize tolerances offer excellent resistance to rust and oxidation. They’re designed for tight fit applications where consistent alignment is needed under moderate environmental exposure. Perfect for marine hardware, assembly jigs, and equipment operating outdoors or in humid conditions.
Metric Stainless A4 (316) Dowel Pins (DIN 7, Oversize)
Metric A4 stainless dowel pins provide the highest grade of corrosion protection available in stainless steel fasteners. Manufactured to DIN 7 oversize tolerances, these pins guarantee secure press-fit installation even under the harshest marine, offshore, or chemical conditions. They’re the professional standard where strength, accuracy, and corrosion resistance must all perform together.
Dowel Pins - Material Options
Alloy Steel
Alloy steel dowel pins are through hardened for maximum strength and durability. They perform under extreme load and shear forces while maintaining precise alignment. Common in mechanical, structural, and manufacturing applications, they deliver long service life and consistent performance in non-corrosive environments.
Stainless Steel 18-8 (A2)
A2 stainless dowel pins offer a strong balance between corrosion resistance and mechanical strength. Suitable for both indoor and outdoor environments, they maintain a bright, clean finish and resist oxidation from moisture and chemicals.
Stainless Steel 316 (A4)
316 stainless dowel pins are built for demanding applications where constant exposure to salt, chemicals, or moisture would destroy standard materials. Their added molybdenum content provides unmatched corrosion protection and long-term stability.
Stainless Steel 416
416 stainless dowel pins offer superior wear resistance and dimensional accuracy for high-precision use. Their machinability and hardness make them perfect for use in tooling, dies, and machinery that depend on consistent alignment and repeatable performance.
Dowel Pins - Available Finishes
Plain
Plain dowel pins are left uncoated for the most accurate dimensional tolerances and press-fit reliability. Alloy steel versions are typically oil-coated for basic protection, while stainless steel variants rely on their inherent corrosion resistance. The plain finish ensures exact alignment and smooth insertion where precision fit matters most.
Passivated (for Stainless Steel)
Passivation enhances the natural corrosion resistance of stainless steel by removing impurities and forming a protective oxide layer on the surface. This finish extends longevity in marine, chemical, and outdoor applications without altering fit or tolerances.
Why Choose South Coast Fasteners?
South Coast Fasteners offers dowel pins made to tight tolerances that ensure your parts line up perfectly. With options in hardened steel and stainless, we’ve got what you need for projects that demand precise positioning and long-lasting durability.
Shop Dowel Pins Online at South Coast Fasteners
Ordering dowel pins from South Coast Fasteners is simple. Browse our selection online or get in touch if you want help finding the right size or need volume pricing. We’re here to help you build with accuracy from beginning to end.