$199 away from FREE SHIPPING
SKU: ABW58-SS

5/8" Conquest USS Flat Washer - 18-8 Stainless Steel

5/8" Conquest USS Flat Washer - 18-8 Stainless Steel!

  • 5/8" Conquest USS Flat Washer - 304 Stainless Steel

Continue Browsing

Nuts and Washers
SKU: ABW58-SS

5/8" Conquest USS Flat Washer - 18-8 Stainless Steel

$0.91
Request Bulk Pricing
Request Bulk Pricing
Ships today when you order in the next 8 hours 30 minutes

Diameters:

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

Type:

18-8 Stainless Steel 316 Stainless Steel

Blazing Fast Shipments

Shipping & Returns

Tailored Business Programs

Partner with Us

Questions?

We can help!

Payment Options

American Express
Apple Pay
Discover
Google Pay
Mastercard
PayPal
Shop Pay
Venmo
Visa

Specifications

Diameter: 5/8"
Thickness: .108" - .160"
Outside Diameter: 1.743" - 1.780"
Inside Diameter: 0.681" - 0.718"
Thread Type: Coarse
Material: 18-8 Stainless Steel
Finish: Plain
Type: 18-8 Stainless Steel
Measuring System: USS
Manufacturer Name: Conquest Fasteners
Quantity: 1 Washer
Description

5/8" Conquest USS Flat Washer - 18-8 Stainless Steel

Built to handle increased stress and exposure, the 5/8" USS flat washer is forged from 18-8 stainless steel for exceptional corrosion resistance. It supports large bolts in structural and outdoor applications where durability is key. The oversized profile helps spread loads and prevent damage to wood, metal, or composite surfaces. A smart pick for decks, docks, equipment, and marine framing.

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

5/8" USS Flat Washer – Stainless Reinforcement for High-Torque Applications

This washer adds strength and stability where fastener reliability can’t be compromised. Its stainless steel build gives you peace of mind on exposed or high-load projects.

Key Features

  • Corrosion-Resistant Alloy: 18-8 stainless provides lasting performance in wet and salty environments.
  • USS Format: Fits standard coarse-thread 5/8" bolts.
  • Broad Load Distribution: Minimizes fastener imprint on softer materials.
  • Installation-Ready: Clean ID allows smooth fit over bolt shafts.
  • Heavy-Duty Usage: Ideal for outdoor structures and metal framing.

Common Applications

  • Decking systems
  • Boat framing
  • Coastal construction
  • Fence post hardware
  • Large-frame assembly

Installation Tips

  • Position washer flat and centered before tightening bolts.
  • Ensure materials are free of burrs to maximize washer contact.
  • Use proper torque values to avoid overstressing stainless threads.
More
View full details

Continue Browsing

Nuts and Washers

× 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 10 reviews
100%
(10)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
j
jeff w
Quality parts - good price

Needed some stainless steel fasteners for my gate refresh and the local stores didnt have the correct size and would have been more costly.

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.

123
  •

    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.