Types of washers
Washers are disk-shaped components that provide enhanced control over locking and friction when used with other fasteners. These fasteners may also feature teeth, indentations and other unique structural mechanisms for use in more specialized applications. In general, they serve a variety of functions, including preventing loosening of the fastener assembly, protecting the surface under a fastener and distributing the pressure more evenly during installation and use.

Compared to nuts and bolts, washers have much fewer variants available. However, among the washer types, there remain important distinctions. Like nuts, washers should be complementary to the selected bolt and chosen to suit the user’s unique fastening application.

• Beveled washers: Beveled washers are formed with a slightly angled surface, allowing them to join materials that are not parallel to one another.
• Flat washers: Flat washers are the most common type of washer. They provide a larger surface area for better load distribution. Different thicknesses are available for a variety of hold strengths.
• Lock washers: Lock washers come in many shapes, such as helices, toothed rings, conical or spring, each designed to prevent slippage of fasteners in demanding applications. They are commonly used in environments that experience high levels of vibration.
• Structural washers: Structural washers are one of the most heavy-duty washer options available. These thick fasteners are designed to withstand the high load pressures of construction.

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CUSTOM BOLTS AND FASTENERS
Our bolts are used by a broad range of industries requiring assemblies and fastening applications. These threaded fasteners can connect machine parts, mount equipment, and more. As a removable fastener, they also facilitate the regular maintenance and inspections that keep equipment running longer.

National Bolt & Nut Corporation offers both standard and custom bolts and fasteners to meet different grades and specifications. This ensures we can cover the full spectrum of our manufacturing customers' applications, including

• Mining
• Heavy equipment
• Construction
• Transportation
• Automotive
• Energy and alternative energy

Watch>>>Fastener Material Selection and Plating Guide
Learn how to choose the best Fastener Material & Finish for your project, what are the different Materials Properties, what is Galvanic Corrosion and more here

National Bolt & Nut, Inc.
National Bolt & Nut, Inc. (NBN) is a Domestic Manufacturer of large diameter custom non-standard fasteners for critical care applications.

NBN supplies Bolts, Nuts, Studs and Washers to the Agricultural, Energy, Heavy Equipment, Mining, Petrochemical, and Rock Crushing industries.

We have provided "blue print specials" since 1996 in all grades of steel and exotic materials.
Our ISO compliant Quality Program challenges NBN to identify ways to best serve ever changing customer needs. All fasteners are manufactured to ASME, ASTM, DIN, ISO and to customers proprietary standard specifications.

NBN guarantees to offer custom quality fasteners at the best price with the fastest industry lead times available.