Industrial Washers

Washers may be small, but they play a big role in the reliability and longevity of any fastening system. Whether you're working on heavy structural assemblies, precision mechanical components, or general-purpose fastening, choosing the right washer is crucial. From load distribution to vibration resistance, corrosion protection, and thread integrity, washers are essential for high-performance results.

Types of Washers

• Flat Washers: The most commonly used type, flat washers distribute load across a wider surface area to prevent fastener pull-through and material damage.

• Thru Hardened Washers: Designed for use with high-strength bolts (Grades 5 and 8), these washers are heat-treated to ensure strength and prevent deformation under heavy loads.

• Nylon Washers: Lightweight, non-conductive, and corrosion-resistant—ideal for electrical insulation and moisture-sensitive applications.

• Round Malleable & Round Plate Washers: Thick, heavy-duty washers often used in timber construction and structural assemblies to provide wide surface coverage.

• Square Washers: Common in wood and masonry anchoring; their shape prevents rotation and offers better hold in softer materials.

• Structural Washers (F436): These washers meet ASTM F436 specs and are used with high-strength structural bolts in steel-to-steel connections.

Materials Matter

• Low Carbon Steel: Cost-effective, ideal for general-purpose use in dry, non-corrosive environments.

• Stainless Steel (18-8, 316): Corrosion-resistant and perfect for outdoor, marine, and food-grade applications.

• Brass: Offers conductivity and corrosion resistance—ideal for plumbing and electrical use.

• Alloy Steel: Higher tensile strength and toughness for demanding industrial applications.

Finishes to Suit Any Environment

• Plain Finish: Uncoated, ideal for indoor or non-corrosive conditions.

• Hot Dipped Galvanized: Thick zinc coating for superior corrosion resistance in outdoor, marine, or treated lumber applications.

• Clear Zinc Plated (Cr3): Clean, bright finish with light corrosion protection—RoHS compliant and widely used across industries.

Grades & Performance

• Grade 5: Medium strength, commonly used in automotive and general-purpose fastening.

• Grade 8: High strength for heavy equipment and industrial applications.

• F436: Specific to structural steel construction, these washers are thru-hardened and used with A325 and A490 bolts.

Common Uses of Washers

• Construction & Structural Steel: Structural and hardened washers paired with high-grade bolts.

• Electrical & Plumbing: Brass and nylon washers for insulation and conductivity.

• Automotive & Machinery: Flat and lock washers with Grade 5 or 8 bolts for vibration resistance.

• Woodworking & Timber Framing: Square and malleable washers for load distribution and security.

No matter your application—from precision machinery to outdoor infrastructure—there’s a washer built for the job. Selecting the right type, material, finish, and grade ensures your fastener system performs with durability, safety, and reliability.

Need help sourcing washers for your specific project? Contact our fastener specialists today—we’ll help you get it right from the start!