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SKU: ABW78-SS

7/8" Conquest USS Flat Washer - 18-8 Stainless Steel

7/8" Conquest USS Flat Washer - 18-8 Stainless Steel!

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Nuts and Washers
SKU: ABW78-SS

7/8" Conquest USS Flat Washer - 18-8 Stainless Steel

$1.79
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Ships Jun 15 when you order now

Diameters:

1/4" 5/16" 3/8" 1/2" 5/8" 3/4" 7/8" 1"

Type:

18-8 Stainless Steel 316 Stainless Steel

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Specifications

Diameter: 7/8"
Thickness: 0.093" - 0.115"
Outside Diameter: 2.245" - 2.270"
Inside Diameter: 0.930" - 0.952"
Thread Type: Coarse
Material: 18-8 Stainless Steel
Finish: Plain
Type: 18-8 Stainless Steel
Measuring System: USS
Manufacturer Name: Conquest Fasteners
Quantity: Single
Description

7/8" Conquest USS Flat Washer - 18-8 Stainless Steel

The 7/8" USS flat washer in 18-8 stainless steel is designed to reinforce oversized bolt connections in highly corrosive environments. Its broad surface area helps prevent fastener damage to wood, metal, or plastic, while the stainless composition ensures long-term durability. With a wide inner diameter, it fits coarse-threaded fasteners and holds strong in structural, marine, or framing applications.

Always confirm washer and bolt compatibility prior to installation for optimal load distribution.

7/8" USS Flat Washer – Rugged Stainless Performance for Large Bolt Systems

This washer handles extreme conditions with confidence. It's the ideal match for oversized hardware where surface protection and strength are critical.

Key Features

  • Corrosion-Resistant Build: 18-8 stainless withstands marine and outdoor environments.
  • Large Surface Area: Spreads force to preserve underlying materials.
  • Standard USS Fit: Designed to pair with 7/8" coarse-thread bolts.
  • Precision Machining: Ensures easy sliding and clean seating.
  • Engineered Durability: Ideal for structural, mechanical, and marine-grade assemblies.

Common Applications

  • Seawall and dock hardware
  • Bridge and infrastructure joints
  • Framing support systems
  • Heavy-duty marine structures
  • Utility tower anchoring

Installation Tips

  • Seat washer flat and centered under bolt head or nut.
  • Check fitment and alignment before final torque.
  • Clean mating surfaces to ensure consistent hold and prevent slippage.
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× WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects and other reproductive harm. For more information visit: www.P65Warnings.ca.gov.

Customer Reviews

Based on 9 reviews
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W
WILLIAM WAY JR
Excellent!

I purchased a few 7" SS bolts, nuts and washers for them for my boat. The order total was minimal and it was online and my first time using Fasteners Plus, so I wasn't sure when or if I would get them. However.....there were constant email updates from order acceptance to delivery and everything came well packaged and in good form. If my experience is indicative of their usual service, they are top notch and I run an aerospace fastener business for a living.

M
MICHAEL O'DONNELL
Excellent Quality, On Time and Great Price

Could not find what I needed locally, Fasteners Plus had it and got it to me promptly. Thanks for your excellent service and products.

D
Don Cordell Ward
Bat House Latch

All of the hardware we use is 316 Marine Grade Stainless Steel. Our bird homes and bat houses are exposed to the elements 24-7 year round. Some are placed on coastal properties where salt air is hard on metals. We bought and have previously bought some of our supplies from these folks. They’ve always been friendly and professional with us.

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    Our multiple distribution centers allow us to reach nearly 80% of the U.S. within 1-2 business days for all in-stock items. With thousands of items in stock & ready to ship, orders placed before 4:00pm CST ship out the same day.

  •

    Our Iowa-based 23,000 square foot manufacturing facility was carefully crafted for the high quality, custom production of tie-down straps and chains, lifting slings, cargo nets, and more. Your vision brought to life.

  •

    As employee-owners, we take customer service very seriously. Our team members are dedicated, professionally-trained, and have decades of combined experience serving the industry. Always speak with a real person and never wait more than 1 business day.