Precision M3 Screws for Specialized Applications

Since 1980, Kozak Micro Adjusters has been proudly producing some of the world’s finest micro precision adjustment screws and mechanical hardware on the market. Our M3 screws are designed for applications that require controlled, precise movement and positioning. These types of screws can be used across a variety of industries, including aerospace, laser technology, photonics, and more. 

Our M3 line includes fine adjustment set screws, screw and bushing matched sets, zero-backlash adjustable sets, OEM alternative screws, high-vacuum screws, and M3 bushings, all in four ultra-fine thread pitches. It’s all part of the nearly 600 screws and hardware components we offer.

For mobile shopping: See products and specs in the table below. Scroll to the left to see more information and to add it to your cart.

32 products
Item # Thread Diameter Thread Pitch Screw Length Ball Tip Diameter Hex Drive List Price Actions
Item # TS3-25-12, M3-0.25 Metric Fine Adjustment Screws
ts3-25-12 M3 0.25 mm 0.472 in 12 mm 1.6 mm 1.5 mm
$3.85
$3.85
$3.77
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Item # TS3-25-08, M3-0.25 Metric Fine Adjustment Screws
ts3-25-08 M3 0.25 mm 0.315 in 8 mm 1.6 mm 1.5 mm
$3.49
$3.49
$3.42
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Item # TS3-25-20, M3-0.25 Metric Fine Adjustment Screws
ts3-25-20 M3 0.25 mm 0.787 in 20 mm 1.6 mm 1.5 mm
$4.21
$4.21
$4.13
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Item # TS3-20-08, M3-0.20 Metric Fine Adjustment Screws
ts3-20-08 M3 0.20 mm 0.315 in 8 mm 1.6 mm 1.5 mm
$3.64
$3.64
$3.57
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Item # TS3-25-39, M3-0.25 Metric Fine Adjustment Screws
ts3-25-39 M3 0.25 mm 1.535 in 39 mm 1.6 mm 1.5 mm
$6.97
$6.97
$6.83
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Item # TS3-25-15, M3-0.25 Metric Fine Adjustment Screws
ts3-25-15 M3 0.25 mm 0.590 in 15 mm 1.6 mm 1.5 mm
$4.04
$4.04
$3.96
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Item # TS3-20-12, M3-0.20 Metric Fine Adjustment Screws
ts3-20-12 M3 0.20 mm 0.472 in 12 mm 1.6 mm 1.5 mm
$4.01
$4.01
$3.93
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Item # TS3-25-12-HV High-Vacuum Fine Adjustment Screws
ts3-25-12-hv M3 0.25 mm 0.472 in 12 mm 1.6 mm 1.5 mm
$18.56
$18.56
$18.20
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Item # TS3-25-10, M3-0.25 Metric Fine Adjustment Screws
ts3-25-10 M3 0.25 mm 0.394 in 10 mm 1.6 mm 1.5 mm
$3.66
$3.66
$3.59
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Item # TS3-20-15, M3-0.20 Metric Fine Adjustment Screws
ts3-20-15 M3 0.20 mm 0.590 in 15 mm 1.6 mm 1.5 mm
$4.19
$4.19
$4.11
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Item # TS3-20-08-HV High-Vacuum Fine Adjustment Screws
ts3-20-08-hv M3 0.20 mm 0.315 in 8 mm 1.6 mm 1.5 mm
$17.64
$17.64
$17.29
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Item # TS3-20-20, M3-0.20 Metric Fine Adjustment Screws
ts3-20-20 M3 0.20 mm 0.787 in 20 mm 1.6 mm 1.5 mm
$4.37
$4.37
$4.28
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Item # TS3-20-30, M3-0.20 Metric Fine Adjustment Screws
ts3-20-30 M3 0.20 mm 1.181 in 30 mm 1.6 mm 1.5 mm
$5.20
$5.20
$5.10
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Item # TS3-20-10, M3-0.20 Metric Fine Adjustment Screws
ts3-20-10 M3 0.20 mm 0.394 in 10 mm 1.6 mm 1.5 mm
$3.83
$3.83
$3.75
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Item # TS3-25-25, M3-0.25 Metric Fine Adjustment Screws
ts3-25-25 M3 0.25 mm 0.984 in 25 mm 1.6 mm 1.5 mm
$4.39
$4.39
$4.30
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Item # TS3-20-39, M3-0.20 Metric Fine Adjustment Screws
ts3-20-39 M3 0.20 mm 1.535 in 39 mm 1.6 mm 1.5 mm
$7.13
$7.13
$6.99
Sold out
Item # TS3-20-25, M3-0.20 Metric Fine Adjustment Screws
ts3-20-25 M3 0.20 mm 0.984 in 25 mm 1.6 mm 1.5 mm
$4.56
$4.56
$4.47
Sold out
Item # TS3-20-12-HV High-Vacuum Fine Adjustment Screws
ts3-20-12-hv M3 0.20 mm 0.472 in 12 mm 1.6 mm 1.5 mm
$19.27
$19.27
$18.89
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Item # TS3-20-33, M3-0.20 Metric Fine Adjustment Screws
ts3-20-33 M3 0.20 mm 1.300 in 33 mm 1.6 mm 1.5 mm
$5.84
$5.84
$5.73
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Item # TS3-20-36, M3-0.20 Metric Fine Adjustment Screws
ts3-20-36 M3 0.20 mm 1.417 in 36 mm 1.6 mm 1.5 mm
$6.48
$6.48
$6.35
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Item # TS3-20-25-HV High-Vacuum Fine Adjustment Screws
ts3-20-25-hv M3 0.20 mm 0.984 in 25 mm 1.6 mm 1.5 mm
$21.75
$21.75
$21.32
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Item # TS3-20-15-HV High-Vacuum Fine Adjustment Screws
ts3-20-15-hv M3 0.20 mm 0.590 in 15 mm 1.6 mm 1.5 mm
$20.10
$20.10
$19.71
Sold out
Item # TS3-25-36, M3-0.25 Metric Fine Adjustment Screws
ts3-25-36 M3 0.25 mm 1.417 in 36 mm 1.6 mm 1.5 mm
$6.32
$6.32
$6.20
Sold out
Item # TS3-20-20-HV High-Vacuum Fine Adjustment Screws
ts3-20-20-hv M3 0.20 mm 0.787 in 20 mm 1.6 mm 1.5 mm
$20.91
$20.91
$20.50
Sold out
Item # TS3-20-10-HV High-Vacuum Fine Adjustment Screws
ts3-20-10-hv M3 0.20 mm 0.394 in 10 mm 1.6 mm 1.5 mm
$18.45
$18.45
$18.09
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Item # TS3-25-25-HV High-Vacuum Fine Adjustment Screws
ts3-25-25-hv M3 0.25 mm 0.984 in 25 mm 1.6 mm 1.5 mm
$21.00
$21.00
$20.59
Sold out
Item # TS3-25-20-HV High-Vacuum Fine Adjustment Screws
ts3-25-20-hv M3 0.25 mm 0.787 in 20 mm 1.6 mm 1.5 mm
$20.20
$20.20
$19.80
Sold out
Item # TS3-25-15-HV High-Vacuum Fine Adjustment Screws
ts3-25-15-hv M3 0.25 mm 0.590 in 15 mm 1.6 mm 1.5 mm
$19.36
$19.36
$18.98
Sold out
Item # TS3-25-10-HV High-Vacuum Fine Adjustment Screws
ts3-25-10-hv M3 0.25 mm 0.394 in 10 mm 1.6 mm 1.5 mm
$17.73
$17.73
$17.38
Sold out
Item # TS3-25-08-HV High-Vacuum Fine Adjustment Screws
ts3-25-08-hv M3 0.25 mm 0.315 in 8 mm 1.6 mm 1.5 mm
$16.92
$16.92
$16.59
Sold out
Item # TS3-25-33, M3-0.25 Metric Fine Adjustment Screws
ts3-25-33 M3 0.25 mm 1.300 in 33 mm 1.6 mm 1.5 mm
$5.68
$5.68
$5.57
Sold out
Item # TS3-25-30, M3-0.25 Metric Fine Adjustment Screws
ts3-25-30 M3 0.25 mm 1.181 in 30 mm 1.6 mm 1.5 mm
$5.04
$5.04
$4.94
Sold out

 

M3 Screws for Almost Any Project

Our M3 screws deliver sub-micron sensitivity even in the most demanding or delicate OEM applications. Because our line of M3 screws and M3 set screws consist of over 30 types of M3 screws with varying thread pitches and screw lengths, the average M3 screw dimension and M3 screw size will vary based on your preference. All of our M3 micro fine adjusters have a HEX drive of 1.5mm, allowing for smooth precision on any application.

Can’t Find the Perfect M3 Screw Size?

If you don’t see what you’re looking for, Kozak Micro Adjusters also offers the flexibility of custom-made screws, based on your desired specifications. Depending on the project, we can customize your M3 screws to meet your needs, including through using optional materials, custom lengths, drive variations, and custom tips (blunt or coned).

Contact us to see what Kozak Micro Adjusters can make for you!

Choosing the Right M3 Thread Pitch for Precision Adjustment

Finding the right M3 thread pitch for your application is essential, as it will affect the level of control you have over positioning. The selection will depend on your application, balancing the need for fine positioning against how much travel is needed with each turn. Finer thread pitches allow for smaller linear adjustments with each revolution, as coarser pitches provide greater travel per turn. Selecting the right option depends on balancing precision requirements with the amount of movement that is needed.

At Kozak Micro Adjusters, we offer M3 screws in four different thread pitches: 0.05 mm, 0.10 mm, 0.20 mm, and 0.25 mm. With each option, you’ll get a different level of linear travel per revolution, allowing you to select the best fit for your application.

Thread Pitch Travel per Revolution Ideal Application Available M3 Products
0.05 mm 50 µm Interferometry, fiber alignment and other sub-micron optical tuning
0.10 mm 100 µm Laser cavity and mirror mount fine-tuning
0.20 mm 200 µm General photonics and diagnostic equipment adjustment
0.25 mm 250 µm Coarse alignment and longer-travel positioning

Need a mating part? Browse our M3 bushings to pair with any M3 fine adjustment screw.

🔑 Key Takeaway
The smaller the thread pitch, the less linear movement occurs with each revolution. A 0.05 mm pitch provides five times finer travel increments than a 0.25 mm pitch for the same rotation angle.

Note: Travel per revolution represents theoretical linear movement, not guaranteed positioning accuracy. Actual performance depends on factors such as backlash, loading, and system design.

Find the Perfect Screws for Any Job at Kozak Micro Adjusters

M3 screws are not all we do at Kozak Micro Adjusters. We are also proud to supply the following micro adjusters and hardware:

 

There are numerous possibilities for the use of our products at Kozak Micro Adjusters, and we can help you find exactly what you need for your project. Whether you are looking for a single screw or need to place an order for 1,000,000 parts, there is no job too big or too small for Kozak Micro Adjusters. We serve the following industries with the world’s finest micro precision adjustment screws:

 

Contact Us Today for Metric Fine Adjustment Screws and Other Products

In need of metric bushings and metric screws? Choose an adjustment screw manufacturer with extensive experience in your industry. Reach out to us today at Kozak Micro Adjusters.

We will assess your needs and provide the proper recommendations. We look forward to working with you!