Grade 8 Yellow Zinc Extra Thick Flat Washers
What are Grade 8 yellow zinc extra thick flat washers? Grade 8 yellow zinc extra thick flat washers are heavy-duty, hardened washers that combine extra thickness with Grade 8 strength, finished in yellow zinc for corrosion resistance. They resist both bending and deformation under the concentrated load of high-strength bolts, making them a top choice for demanding joints.
Extra thick vs standard Grade 8 washers
This washer brings together two things that resist load: extra thickness for stiffness against bending and dishing, and Grade 8 hardening for strength against the concentrated clamping force of high-strength bolts. That combination makes it the choice for the most demanding joints, such as heavy equipment, suspension, and structural repair, where a standard or even a normal hardened washer might flex or embed. The yellow zinc plating adds corrosion resistance and signals the high-strength grade. Always pair a Grade 8 washer with Grade 8 bolts so the whole joint is balanced.
Why choose Grade 8 yellow zinc extra thick flat washers
- Extra thick and hardened: resists both bending and deformation.
- High strength: matched to Grade 8 high-strength bolts.
- Preserves preload: holds clamping force under heavy load.
- Yellow zinc: corrosion resistance and a high-strength cue.
Common applications for Grade 8 extra thick washers
- Heavy equipment and machinery
- Automotive and trailer suspension
- Structural repair and reinforcement
- High-load joints over oversized holes
For a corrosion-resistant stainless option, see 18-8 stainless extra thick flat washers, and browse every option on the main flat washers category.
Grade 8 Yellow Zinc Extra Thick Flat Washers FAQ
How is this different from a standard Grade 8 washer?
It adds extra thickness on top of Grade 8 hardening, so it resists both bending and deformation, ideal for the most demanding heavy-load joints.
Why not use a standard washer under a Grade 8 bolt?
A standard washer can dish, bend, or embed under the high clamping force, losing preload. An extra thick, hardened washer holds up.
Why is the zinc yellow?
Yellow zinc plating offers more corrosion resistance than clear zinc and commonly signals a higher-strength grade, making Grade 8 washers easy to identify.