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Solid Stainless Steel Balls
Notice: Please confirm the Ball Diameter you are ordering.
To better understand each type of commonly used stainless steel and its properties, see the following descriptions.
- 440C Stainless Steel is a high carbon martensitic stainless steel. It has high strength, medium corrosion resistance, good hardness, and wear resistance
- 304 Stainless Steel is the most widely used stainless steel. It is austenitic stainless steel and has a higher corrosion resistance than ordinary steel.
- 316L Stainless Steel is also austenitic stainless steel. It offers higher corrosion resistance than 304.
- 201 Stainless Steel is the least expensive type of stainless steel. It is tough in cold environments but has lower corrosion resistance. It is the preferred choice for applications that require low cost, high durability, and no concern for exposure to corrosive elements.
Equipment Repairing
Steel balls are useful in valve pumps, and spray paint bottles for agitation, sprinkling systems, appliance components, casters, drawer slides, locking mechanisms, semi-precision bearings, and lots of other industrial and consumer products.
Bearing Balls
Use for different kinds of ball bearings
DIY Projects
DIY keychain, rolling ball project
George
Reviewed in the United States on January 19, 2025
All the bearings measured out to be a true 4mm. I used them as detents on a 4 way automotive switch.
Sandro Rossi-Dragovich
Reviewed in Australia on September 22, 2024
PERFECT FOR MY JOB.
Joseph
Reviewed in Canada on May 3, 2024
Does what I needed them for.
Jack Conrad
Reviewed in the United States on December 28, 2024
Needed to replace my rollers on the slides on my drawers. Some drop out and work perfectly
Customer
Reviewed in the United States on November 7, 2024
I drop one or two in needle tip bottles with alcohol inks to help get them mixed better.
P. F. Nguyen
Reviewed in the United States on November 21, 2024
But if you need 4mm balls, you can also disassemble a common 608 skateboard bearing to get some. I suppose you can use these to refurbish a 608 bearing if the races aren't done.
David Bonin
Reviewed in the United States on November 11, 2024
I bought these 2mm balls as replacement pivots is some German Post [brand] drafting compasses my father had. They were exactly what I needed and the compasses are as good as new._____As a retired mechanical engineer who studied metallurgy, I couldn't help but notice the many complaints that these 304 stainless steel balls are not magnetic / are not attracted to a magnet. Some purchasers even thought these balls were made from some sort of fake steel.Ummm, yeah...The crystal structure of austenitic 304 stainless steel is called "face centered cubic". It describes the microscopic arrangement of atoms in the steel. It's what keeps 304 from being magnetic -- you can't magnetize it and it's only very weakly attracted to magnets. 304 also does not work harden.In contrast, plain carbon steel is "body centered cubic". This is what allows ordinary steel to be attracted to magnets and to be work hardened.It's 304's underlying crystal structure that makes all the difference. If you're really interested, you can find more information on the interwebs.
Tosa
Reviewed in the United States on October 2, 2024
They worked for what I wanted them for.
Lisa
Reviewed in the United States on December 22, 2023
My way-too-expensive Kiara Sky e-file was making awful noises, so I found a YouTube video about repairing it. The video warns you that there are 2 tiny balls that you can’t lose, or else you’ll be buying 2.5mm ball bearings. So I took them out and carefully placed them into a cup so I didn’t lose them… but of course I ended up dropping one because they’re the smallest things that have ever existed. We even heard it fall, but after 3 adults spent over an hour on the floor, trying and failing to find it (we even used a high-powered magnet on a string!) I decided to give up and just buy this package of 50 more. Which was a good move, honestly, because I somehow lost 7 more of them while trying to put the e-file back together.
B. Barrows
Reviewed in the United States on May 11, 2020
I don't know what these are actually made of, but they're not Stainless Steel, or at least much of it. They have almost no reaction with magnets and I'm using very strong N52 magnets, which makes them essentially useless for my needs.
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