Search  for anything...

5/8 USS Thick Flat Washer (25 Pack) 5/8" x 1-3/4" Ceramic Black Ruspert Coating for Exterior Use by Makers Bolt

  • Based on 29 reviews
Condition: New
Checking for product changes
$16.95 Why this price?
Save $0.03 was $16.98

Buy Now, Pay Later


As low as $4 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, Jul 24
Order within 11 hours and 25 minutes
Available payment plans shown during checkout

Size: 5/8" (25 pack)


Features

  • Size: 5/8" | Outside Diameter: 1-3/4" | Inside Diameter: 11/16" | Thickness: 0.108"-0.160"
  • Quantity: 25 washers per package
  • Type: USS flat washer - USS is the most common standard for flat washers | Thicker than SAE
  • Plating: ceramic black ruspert coated for excellent corrosion resistance | Material: low carbon steel for general use
  • Meets ASME B18.21.1

Material: Low Carbon Steel


Washer Type: Flat


Exterior Finish: Black Ruspert


Size: 5/8" (25 pack)


Brand: MAKERS BOLT


Package Dimensions ‏ : ‎ 5.91 x 5.16 x 0.83 inches; 1.54 Pounds


Date First Available ‏ : ‎ February 19, 2025


Manufacturer ‏ : ‎ Makers Bolt


Best Sellers Rank: #153,372 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #883 in Flat Washers


#883 in Flat Washers:


Customer Reviews: 4.8 4.8 out of 5 stars 29 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jul 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Heavy duty washers with durable coating!
Size: 1/2" (25 pack)
Why did you pick this product vs others?: I got these because I needed some black washers to match the black bolts I used on my pergola. Washer quality: These are well- machined, very heavy duty washers with complete black coating and a nice thick gauge steel construction. Look: I was happy and a little surprised that the coating didn’t scratch off when it was subjected to tool work, including an impact socket! Value for money: Very happy with these, and I think they’re very good quality for the money! ... show more
Reviewed in the United States on July 7, 2025 by MattG MattG

  • Too heavy for making chainmail armour (armor)
Size: 1/4" (100 pack)
I wanted to try these for a niche use - making chainmail, using half of these washers and half riveted rings. However, these are too heavy for that. Nothing wrong with them. The black coating helps prevent rust but does not mitigate it entirely.
Reviewed in the United States on July 3, 2025 by Lilith

  • Great quality
Size: 3/8" (50 pack)
These are nice heavy duty quality washers. Very durable.
Reviewed in the United States on June 22, 2025 by Brian Galasso

  • Usable steel utility washers
Size: 1/2" (25 pack)
These washers are serviceable utility type. Thickness is .092", OD is 1.375", ID is .602". They are stamped steel (not stainless). Not sure what to make of the finish, which is brownish black and fairly rough and uneven. See photo of back and front. I'm guessing maybe it's a heated oil finish. No idea how well it will last in damp environment. They call it a "Rustpert" finish. ... show more
Reviewed in the United States on June 2, 2025 by vtam vtam

  • As Described
Size: 5/16" (100 pack)
It's a bag of washers. They are true to size and seem uniform in construction. They will be handy for many projects.
Reviewed in the United States on June 8, 2025 by L. Christopher

  • Consistently made and coated
Size: 5/16" (100 pack)
All the washers (I got the 5/16"x7/8") are consistently and cleanly made. No rough edges, flashing etc. As far as the Ruspert coating, I'll need to expose them to the elements over time. The top black coating will scratch off somewhat easily, but as I understand it there are other coatings/layers underneath that make up the finish so the protection is likely still there. ... show more
Reviewed in the United States on May 20, 2025 by KTM

  • Matte black 3/8 x 1" washers, sturdy and functional.
Size: 3/8" (50 pack)
50 - 3/8 inch x 1 inch flat matte black washers roughly 1/16" thick. These are exactly what they should be, good sturdy functional washers for 3/8" bolts. Come sealed in a heavy plastic bag.
Reviewed in the United States on May 20, 2025 by Pickles Picks Pickles Picks

  • Matches the description as expected
Size: 1/2" (25 pack)
Why did you pick this product vs others?: The washers are exactly what you would expect the measurements were exactly as expected, shown in the pictures. This is the first time I’ve purchased Ruspert coated hardware so I can not speak to how it last in service. The coating looks uneven, with swirls, with a flat black finish. ... show more
Reviewed in the United States on July 4, 2025 by Anthony Anthony

Can't find a product?

Find it on Amazon first, then paste the link below.