Description
3/4-10 Grade 8 Yellow Zinc Hex Nut is a high-strength fastener with a yellow zinc-plated finish, offering superior tensile strength over Grade 2 alternatives and light corrosion protection, often used in heavy-duty and high-stress fastening applications.
Hex nuts have a flat bearing surface, a six-sided body, and a fully threaded interior designed to fasten onto a compatible bolt or threaded rod to secure components together. Their six-sided body allows for easy tightening with standard wrenches and sockets, and the high-strength alloy steel construction provides reliable performance in demanding mechanical and structural applications.
Grade 8 Yellow Zinc
- Grade 8 Yellow Zinc hex nuts offer significantly higher tensile and proof strength than Grade 2 alternatives, making them suitable for heavy-duty and high-stress applications
- The yellow zinc plating provides light corrosion resistance and serves as a visual identifier for Grade 8 fasteners in the field
3/4-10 Grade 8 Yellow Zinc Hex Nut Features
- High torque capacity due to the six-sided body, allowing use with wrenches, ratchets, and impact drivers
- Fully threaded interior designed to engage completely with the mating bolt or threaded rod for a secure, reliable connection
- Superior tensile strength from the high-strength alloy steel construction, suitable for heavy loads, high-stress connections, and demanding mechanical assemblies
Common Uses
- Heavy machinery, automotive, and equipment assembly requiring high-strength fastening solutions
- Structural connections and industrial applications subject to high loads, vibration, or dynamic stress
- Any application where Grade 2 fasteners are insufficient and maximum clamping strength is required
Application
- Thread onto a compatible Grade 8 bolt or threaded rod by hand until snug against the mating surface, then tighten with a wrench or socket sized to the hex body
- Use with a hardened washer between the nut and mating surface to distribute load and prevent surface damage under high clamping forces
- Ensure the mating bolt or threaded rod shares the same thread diameter, pitch, and grade — always pair Grade 8 nuts with Grade 8 bolts for a properly matched assembly
Tips
- Always verify that the bolt or threaded rod shares the same thread diameter and pitch as the hex nut before assembly
- Hex nuts are measured by their thread diameter and pitch, matching the bolt or threaded rod they are paired with
- Always pair Grade 8 Yellow Zinc hex nuts with Grade 8 bolts — mismatched grades can result in fastener failure under load; use hardened washers to maintain assembly integrity













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