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SKU: ABW38-SS

3/8" Conquest USS Flat Washer - 18-8 Stainless Steel

3/8" Conquest USS Flat Washer - 18-8 Stainless Steel!

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Nuts and Washers
SKU: ABW38-SS

3/8" Conquest USS Flat Washer - 18-8 Stainless Steel

$0.24
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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: 3/8"
Thickness: 0.043" - 0.057"
Outside Diameter: 0.995" - 1.01"
Inside Diameter: 0.399" - 0.416"
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

3/8" Conquest USS Flat Washer - 18-8 Stainless Steel

With excellent corrosion resistance and solid structural integrity, the 3/8" USS flat washer in 18-8 stainless steel is built for long-lasting performance. Its wide bearing surface helps distribute clamping force evenly, protecting your material and reinforcing your fastener connection. This washer is suitable for marine, industrial, and outdoor residential use where moisture or weathering is a factor. It installs easily with standard coarse-thread bolts or screws.

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

3/8" USS Flat Washer – High-Performance Stainless Steel for Coastal and Industrial Jobs

Trusted by contractors and DIYers alike, this washer holds strong in environments where other materials fail. Stainless steel strength ensures each connection stands the test of time.

Key Features

  • 18-8 Stainless Steel: Corrosion-resistant for reliable outdoor or marine use.
  • Load-Balancing Surface: Reduces risk of pull-through and material wear.
  • Precision Fit: Machined to pair with coarse-thread 3/8" bolts and screws.
  • USS Dimensions: Offers consistent performance in structural fastenings.
  • Multi-Purpose Utility: Compatible with wood, metal, and composite materials.

Common Applications

  • Marina construction
  • Deck hardware and framing
  • Structural support in moist environments
  • Sign and light pole mounting
  • Machinery enclosures

Installation Tips

  • Clean contact points to remove debris before installation.
  • Ensure proper alignment of bolt and washer for consistent clamping.
  • Use anti-seize lubricant if bolt threading into stainless nut or surface.
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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.