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Types of Lock Washers

Split Lock Washer Regular Plain

Regular plain split lock washers are designed to prevent loosening by biting into the mating surface as the fastener is tightened. Without coating, they are best suited for indoor or covered applications where moisture is minimal. Contractors rely on them for assembly and repair work where vibration Resistant is required but corrosion protection is not a priority. Their simple design makes them a cost-effective choice for everyday fastening.

Split Lock Washer Regular Zinc Cr+3

Zinc Cr+3 regular split lock washers provide the same locking action as plain washers with added corrosion Resistant. The bright zinc finish also enhances appearance, making them suitable for commercial and light industrial applications. They are widely used in projects where both durability and a clean look are required. Installers prefer them for reliable performance at a practical cost.

Split Lock Washer Regular Alloy Thru Hardened Zinc Yellow Cr+6

These thru hardened alloy split lock washers finished in zinc yellow Cr+6 combine superior strength with enhanced corrosion protection. The golden coating provides long service life and easy identification on the job site. Contractors use them in heavy-duty applications where vibration Resistant and visibility are imporPant. Their durability makes them a go-to choice for demanding mechanical and structural projects.

Split Lock Washer Regular Zinc Yellow Cr+6

Regular split lock washers with zinc yellow Cr+6 finish provide improved protection over clear zinc while also offering a bright golden color. This finish makes them easy to spot and ensures longer Resistant to rust. They are used in commercial and industrial jobs where added protection and quick identification are valuable. Builders rely on them for projects requiring durability under vibration.

Split Lock Washer Regular HDG

Hot-dip galvanized split lock washers are designed for outdoor or exposed environments where corrosion protection is critical. The thick zinc coating ensures long-lasting durability even under harsh weather conditions. Contractors use HDG washers for structural and heavy-duty installations where vibration Resistant and rust prevention are both essential. They are commonly specified for infrastructure and outdoor assemblies.

External Tooth Lock Washer Plain

Plain external tooth lock washers feature serrated edges that bite into the surface to prevent loosening. Without coatings, they are best for indoor applications not exposed to moisture. Contractors use them in assemblies where strong locking action is needed but corrosion protection is unnecessary. Their cost efficiency and performance make them a staple in general fastening.

External Tooth Lock Washer Zinc Cr+3

External tooth lock washers with a zinc Cr+3 finish provide dependable locking action with added corrosion Resistant. The bright finish enhances durability and gives a professional look. They are often chosen for commercial and light industrial projects where long-lasting connections are imporPant. Installers appreciate their combination of strength and clean appearance.

Internal Tooth Lock Washer Plain

Plain internal tooth lock washers grip the fastener from the inside edge, preventing loosening under vibration. They are designed for indoor or protected applications where corrosion is not a concern. Contractors use them for small fasteners or assemblies that require secure holding power. Their compact design makes them effective in tight spaces.

Internal Tooth Lock Washer Zinc Cr+3

Zinc Cr+3 internal tooth lock washers combine the bite of internal teeth with protection against rust and wear. The coating extends service life and maintains appearance in commercial and industrial environments. They are widely used where reliable fastening is required under vibration. Contractors prefer them for projects demanding both durability and moderate corrosion Resistant.

Internal/External Tooth Lock Washer Zinc Cr+3

These lock washers combine both internal and external teeth for maximum holding power. With a zinc Cr+3 finish, they are Resistant to corrosion while offering aggressive locking action. They are used in demanding applications where fasteners must remain secure under stress and vibration. Contractors select them when both strength and protection are priorities.

Metric Split Lock Washer Thru Hardened DIN 127B Plain

Metric thru hardened split lock washers in plain finish are built for strength and vibration Resistant. Without additional coating, they are best for indoor or controlled environments. Contractors use them in metric assemblies requiring dependable load control. Their durability ensures performance in structural and mechanical applications.

Metric Split Lock Washer DIN 127B Zinc Yellow Cr+6

These metric split lock washers feature zinc yellow Cr+6 finish for superior corrosion Resistant and high visibility. The golden coating allows quick identification and extends service life. They are used in metric construction and machinery where vibration Resistant and durability are required. Builders rely on them for projects that demand long-term reliability.

Metric External Tooth Lock Washer DIN 6797A Zinc Cr+3

Metric external tooth washers with zinc Cr+3 finish provide secure locking action with added corrosion Resistant. The external teeth bite firmly into the surface, keeping fasteners tight under stress. They are widely used in metric systems across industrial and commercial applications. Contractors appreciate their blend of strength and protection.

Metric External Tooth Serrated Lock Washer DIN 6798A Zinc Cr+3

These serrated metric external tooth washers feature aggressive teeth that grip tightly to prevent loosening. Finished with zinc Cr+3, they resist rust while maintaining durability. They are chosen for heavy-duty metric applications where strong locking power is essential. Builders specify them in environments subject to vibration and wear.

Metric Internal Tooth Lock Washer DIN 6797J Zinc Cr+3

Metric internal tooth washers with zinc Cr+3 finish deliver compact, secure locking action and corrosion protection. They are ideal for smaller fasteners and confined spaces. Contractors use them in metric assemblies where vibration Resistant is required. Their durability ensures reliability across industrial projects.

Split Lock Washer Hi Collar Thru Hardened Plain

Hi collar split lock washers provide additional thickness for greater holding power. In plain finish, they are intended for indoor or protected applications. Contractors use them in structural and mechanical jobs requiring stronger Resistant to loosening. Their thru hardened build ensures long service life under stress.

Split Lock Washer Hi Collar Thru Hardened Zinc Yellow Cr+6

These hi collar washers are thru hardened for strength and finished in zinc yellow Cr+6 for corrosion protection and visibility. They deliver enhanced durability and are easy to identify on job sites. Contractors choose them for demanding installations where vibration Resistant and longevity are critical. Their design makes them ideal for heavy-duty fastening.

USA Split Lock Washer Regular Heat Treated Plain

USA-made heat treated plain split lock washers offer durability and compliance with domestic sourcing requirements. Without coatings, they are suited for protected applications. Contractors specify them when USA origin is required for government or infrastructure projects. Their heat-treated construction ensures consistent performance under load.

Split Lock Washer Heavy Thru Hardened Plain

Heavy thru hardened split lock washers are built to withstand greater loads and stresses. In plain finish, they are best used indoors or in dry environments. Contractors select them for structural assemblies that demand high strength. Their robust build provides assurance in critical applications.

Split Lock Washer Regular Alloy Plain

Regular alloy plain split lock washers provide improved strength compared to standard versions. With no coating, they are intended for indoor use or non-corrosive settings. Contractors use them in mechanical and structural applications that require dependable performance. Their alloy build ensures added toughness under vibration.

Lock Washers - Material Options

South Coast Fasteners stocks lock washers in a variety of materials that provide dependable strength, durability, and the right balance of toughness and cost for different applications.

Steel

standard steel lock washers are built for everyday fastening jobs. They provide solid holding power and are a practical choice for general construction, maintenance, and repair work. Their strength and affordability make them one of the most commonly used options in both professional and DIY applications.

Medium Carbon Steel

Medium carbon steel lock washers deliver more toughness than standard steel, while still being cost-effective. Heat-treated for strength, they are reliable for assemblies that experience frequent use or moderate vibration. Contractors often choose medium carbon steel washers for general-duty mechanical and industrial fastening where consistent performance is needed without driving up costs.

Alloy Steel

Alloy steel lock washers are engineered for higher performance. By incorporating alloying elements, these washers achieve greater tensile strength and durability, making them a trusted choice in heavy machinery, automotive applications, and demanding mechanical systems. They resist wear and deformation under stress, keeping connections stable even in high-vibration environments.

Through Hardened

Through-hardened lock washers undergo a heat-treatment process that hardens the material throughout, not just on the surface. This makes them far more Resistant to crushing and deformation under heavy loads. Theyre often specified for structural steel assemblies, industrial machinery, and construction jobs where failure is not an option.

Through Hardened Alloy

Through-hardened alloy steel lock washers combine the benefits of alloy strength with the toughness of complete heat treatment. These washers are designed for critical-use applications such as aerospace, defense, or heavy transport systems where vibration, stress, and safety standards are extreme. Their ability to maintain grip and shape under punishing conditions makes them the premium choice for high-stakes fastening.

Lock Washers - Available Finishes

South Coast Fasteners offers lock washers in finishes that provide protection against corrosion, ensure compatibility with surrounding materials, and make identification on the job simple.

Hot Dip Galvanize

Hot dip galvanized lock washers are coated with a thick layer of zinc that provides long-term Resistant against rust and corrosion. This makes them an excellent choice for outdoor projects, marine environments, or infrastructure exposed to consPant weathering. Builders rely on them for durability in environments where untreated steel would quickly fail.

Plain

Plain finish lock washers are uncoated and offer a raw steel surface. They are a cost-effective choice for indoor assemblies where corrosion Resistant isnt necessary, and theyre also commonly used when welding or painting after installation. Their simplicity keeps them adaptable and economical.

Yellow Zinc Cr+6

Yellow zinc Cr+6 adds a golden chromate layer over zinc plating, combining corrosion protection with easy visibility. These washers are often selected for automotive, electrical, or mechanical installations where quick identification and durability are both imporPant. The bright finish also adds a professional appearance to exposed connections.

Zinc

Zinc-plated lock washers provide a clean, silver finish that offers reliable rust protection for everyday use. This general-purpose coating is suitable for indoor or light outdoor applications, making it a popular choice in construction, maintenance, and repair. It strikes a balance between cost and performance for common fastening needs.

Zinc Cr+3

Zinc Cr+3 uses a modern trivalent coating process that delivers strong corrosion Resistant while complying with environmental standards. The finish provides a bright, clear appearance and is widely accepted in industrial, construction, and commercial projects where reliability and compliance both matter.

Why Choose South Coast Fasteners?

South Coast Fasteners is the trusted source for fasteners, PPE, industrial supplies, hand tools, cutting tools, and abrasives for professional and industrial applications. Our knowledgeable team helps you source the right product the first time, whether you are fulfilling a small repair order or supplying a full production run. With competitive pricing, stocked inventory, and fast shipping, we make procurement straightforward.

Shop Lock Washers Online at South Coast Fasteners

South Coast Fasteners stocks a wide range of materials, styles, and sizes suited for demanding applications. Available in split, internal tooth, external tooth, and wave configurations, these washers create mechanical resistance against fastener loosening under vibration and dynamic loads across automotive, machinery, and general industrial assembly. With competitive pricing and fast shipping, we are your reliable source for lock washer solutions.