10 Best Grade 8 Hardware Nuts and Washers of 2024 - Tested and Reviewed

Introducing the 3/8"-16 Grade 8 Nylon Insert Locknuts, the ultimate solution for secure and reliable fastening in Grade 8 applications. Constructed from high-quality grade 8 steel, these locknuts boast exceptional durability, ensuring long-lasting performance even under demanding conditions.

The hallmark of these locknuts lies in their self-locking nylon inserts. Engineered to grip mating threads securely, these inserts prevent unwanted loosening and ensure a steadfast hold. This eliminates the need for constant tightening, saving time and ensuring a worry-free connection. The coarse thread design further enhances the locknuts' bite, providing a robust and secure grip in a wide range of materials.

Experience unparalleled fastening strength with Prime-Line 9105485 Grade 8 Hex Head Cap Screws. Crafted from high-quality steel, these screws excel in heavy-duty applications, guaranteeing a secure hold for your projects. Their grade 8 rating signifies exceptional durability and tensile strength, ensuring longevity and reliability.

The protective yellow zinc coating adds an extra layer of defense against corrosion, making these screws ideal for use in outdoor or moisture-prone environments. Whether you're a seasoned professional or a DIY enthusiast, these screws provide peace of mind, knowing that your projects will withstand the test of time. Invest in quality and elevate your construction projects with Prime-Line Grade 8 Hex Head Cap Screws.

Locksmith Grade 8 Coarse Lock Nuts are the ideal choice for securing critical connections in demanding applications. Constructed from high-quality Grade 8 steel, these nuts offer exceptional strength and durability, ensuring a long-lasting hold that you can rely on. The coarse thread design provides a secure grip in a variety of materials, making them suitable for use in both indoor and outdoor projects.

With a 1/2"-13 thread size, these nuts are compatible with a wide range of bolts, making them a versatile addition to your toolbox. The pack of 25 provides a convenient supply for even the most demanding projects, ensuring that you have the necessary hardware on hand when you need it. Whether you're working on automotive repairs, heavy-duty construction, or any other application where superior strength and reliability are essential, Locksmith Grade 8 Coarse Lock Nuts are the perfect solution.

When seeking a washer that embodies both strength and resilience, look no further than this Grade 8 Steel Flat Washer. Its robust steel construction ensures it can withstand demanding conditions, while the Zinc Yellow Chromate Plated finish offers an added layer of protection against corrosion. Whether for industrial projects or automotive maintenance, this washer delivers exceptional performance.

Adhering to the stringent ASME B18.22.1 standards, this washer meets the highest quality benchmarks. Its precise dimensions ensure a snug fit, preventing loosening or slippage. While it may require specialized tools or expertise for installation, the peace of mind it provides is well worth the effort. However, it's important to note that this washer's capabilities may not extend to extremely heavy-duty applications. For such scenarios, a more robust solution might be necessary.

The Makers Bolt 1/4"-20 Grade 8 Hex Nylon Insert Lock Nut is an indispensable component for countless industrial, automotive, and DIY projects. Crafted from high-tensile steel, these Grade 8 nuts provide exceptional strength and resistance to deformation. The unique nylon insert securely locks onto bolts or threaded rods, preventing unintended loosening under intense vibrations and load conditions.

Thanks to their durable construction and yellow zinc plating, these lock nuts exhibit superior resistance to corrosion and wear. They are ideal for securing machinery, heavy equipment, and other applications that demand steadfastness and longevity. With 100 nuts included in each pack, you'll have ample supply for multiple projects.

The 5/8"-18 (10 pack) Grade 8 Hex Nylon Insert Lock Nut, Fine Thread, Yellow Zinc offers an unparalleled combination of strength and reliability, making it an exceptional choice for demanding fastening applications. Its Grade 8 steel construction provides exceptional durability and resilience against wear and tear, while the nylon insert effectively prevents loosening caused by vibrations. This feature makes the lock nut ideal for use in scenarios where maintaining secure connections is paramount, such as in industrial machinery or automotive applications.

The fine thread design of the lock nut ensures a precise and secure fit, preventing any unwanted movement or rattling. The yellow zinc coating provides an additional layer of protection against corrosion, extending the lifespan of the nut even in harsh environments. However, installers should note that working with Grade 8 hardware may require specialized tools to achieve the desired torque. Additionally, the nylon insert may occasionally pose challenges in applications where meticulous torque control is essential. Despite these minor considerations, the 5/8"-18 (10 pack) Grade 8 Hex Nylon Insert Lock Nut remains an exceptional choice for applications that demand the highest levels of fastening performance and longevity.

The 9/16"-12 Grade 8 Hex Nylon Insert Lock Nut by Makers Bolt is a robust and reliable choice for demanding applications. Its grade 8 construction ensures superior strength, while the nylon insert provides an exceptional lock against vibration and loosening. This lock nut is designed to withstand heavy loads and harsh environments, making it suitable for use in construction, automotive, and industrial settings.

However, it's worth noting that grade 8 lock nuts come at a higher cost than lower-grade options. Additionally, they may require the use of specific tools for proper installation. Nonetheless, if you prioritize durability and secure locking, the 9/16"-12 Grade 8 Hex Nylon Insert Lock Nut is an excellent choice.

NAOEVO's Duplex 8 Gauge Marine Grade Wire is an excellent choice for various electrical installations in marine, automotive, RV, and solar applications. Crafted from durable PVC and tinned copper, this wire boasts exceptional resistance to water, corrosion, and weathering, making it ideal for harsh marine environments. The stranded construction provides flexibility for easy routing, while the dual conductors facilitate efficient power distribution.

With its superior conductivity and resistance to the elements, the NAOEVO 8 Gauge Marine Wire ensures reliable performance and longevity. Whether you're wiring a boat, RV, or solar system, this wire is built to withstand the rigors of marine use. Its ease of installation makes it a practical choice for both professionals and DIY enthusiasts alike. By choosing NAOEVO, you can rest assured that your electrical systems will perform optimally and safely in even the most demanding conditions.

These Grade 8 flat washers are the epitome of strength and reliability in any fastening application. Crafted from high-tensile steel, they possess exceptional durability and resistance to deformation. The yellow zinc coating further enhances their longevity by safeguarding against rust and corrosion, making them ideal for outdoor or harsh industrial environments. With a generous count of 100 washers, you can tackle multiple projects confidently, ensuring secure connections.

Their versatility extends to a wide range of industries, from automotive and construction to heavy machinery and equipment maintenance. Whether you're a seasoned professional or a DIY enthusiast, these washers are an indispensable addition to your toolbox. They distribute load effectively, prevent bolt loosening, and ensure optimal performance in even the most demanding applications. While they may come at a slightly higher cost than lower-grade options, their superior strength and durability make them a worthwhile investment for projects that demand exceptional reliability.

These Grade 8 lock nuts by Makers Bolt offer an exceptional combination of strength, durability, and anti-loosening performance. The nuts are constructed to meet stringent Grade 8 specifications, ensuring their resilience in demanding applications where maximum holding power is critical. Their hexagonal shape allows for easy tightening with standard tools, while the nylon insert provides a secure grip that resists loosening due to vibration or movement. Additionally, the yellow zinc plating effectively prevents corrosion and extends the lifespan of the nuts.

Whether you're a professional contractor, DIY enthusiast, or simply seeking reliable fasteners, these Grade 8 lock nuts will exceed your expectations. Their versatility makes them suitable for a wide range of projects, including automotive repairs, construction work, and equipment assembly. The 10-pack quantity ensures you have an ample supply for various tasks. By choosing these lock nuts, you can rest assured that your connections will remain secure and reliable, even under the most challenging conditions.