Micrograin Carbide Square End Mill - 4 Flute, 4T Design (1pcs, 1/4") for Alloy Steels, Hardened Steel, Metal, and Multipurpose Milling - Precision Tool Kit for DIY and Professional Use
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Availability:
In Stock.
Arrives
Wednesday, Sep 10
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Size: 1/4 in
Number of Items: 1
Features
- Wide ApplicationEngineered for carbon steels (~HB225), alloy steels (HB225~325), pre-hardened steels (up to HRC45), and more, the Carbide End Mill excels in CNC machining, engraving, high-precision carving, and high-speed applications
- AlTiBN CoatingThe AlTiBN-coated carbide end mill delivers 3x wear resistance, high-temp oxidation shielding, and 40% enhanced thermal stabilityits nano-structured surface supports rough-to-fine machining on heat-treated materials below 50C for extreme dry and heavy-duty applications
- High-Efficiency Cutting0.6m micro-grain carbide 4-flute end mill with 55 helixsuperior wear resistance, smooth cuts, fast chip removal, and 20% faster machining for precision and high-speed work
- Precision CraftedHOYUSK's Mill Bits ensure -0.02mm accuracy across CNC lathes, engraving machines, and machining centersdelivering flawless surface finish, minimal vibration, and reliable micro-level precision for critical components
Material: Tungsten Carbide
Finish Type: AlTiBN
Cutting Diameter: 0.25 Inches
Number of Flutes: 4
Size: 1/4 in
Package Dimensions : 5.67 x 3.98 x 0.55 inches; 1.59 ounces
Item model number : DTHS4TN1
Date First Available : February 8, 2025
Manufacturer : HOYUSK
Best Sellers Rank: #50,369 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #33 in Square Nose End Mills
#33 in Square Nose End Mills:
Customer Reviews: 4.6 4.6 out of 5 stars 32 ratings
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If you place your order now, the estimated arrival date for this product is:
Wednesday, Sep 10
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
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View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 1/8" 3/16" 1/4" 3/8"
Number of Items: 4
Sharp and cut well. I will update this review if they do not hold up as they should.
Reviewed in the United States on August 5, 2025 by Andrew
Size: 1/8" 3/16" 1/4" 3/8"
Number of Items: 4
I have a small, inexpensive mini-mill, which I use occasionally for projects. Usually it's 6061 aluminium, but also some mild steel. I have used these for aluminum several times now, and I'm happy with the results. I haven't broken any of them yet, and they're still sharp. They provide a nice finish, and are able to do pretty aggressive cuts. I'm not an expert with milling, and i don't do a ton of it, but these have worked well for me so far.
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Reviewed in the United States on July 22, 2025 by KB
Size: 1/4 in
Number of Items: 1
I have a low powered mill, so actually attempting to cut steel is out of the question, but this bit has done a good job with the toughest materials I've thrown at it. The chip clearance is good and I have no complaints about the sharpness.
Reviewed in the United States on July 12, 2025 by Tofof
Size: 1/8" 3/16" 1/4" 3/8"
Number of Items: 4
They are dimensionally accurate and appear to be good, solid metal with precise, sharp edges. The product matches the description in the listing. They fit in the machine as they should, also. Time will tell how they hold up to use. Pricing seems accurate for the quality of the tool.
Reviewed in the United States on July 11, 2025 by Mende Staggs
Size: 1/8" 3/16" 1/4" 3/8"
Number of Items: 4
I got these because of the variety pack and the carbide. They appear to be pretty tough so far. I used the bigger bit to cut several channels into 3/8 mild steel and it worked perfectly. I haven't put these through a torture test and don't really plan to yet. My goal is to limit these to mild steel and keep them fresh. I think they are more than capable. All in all I'm very happy with them.
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Reviewed in the United States on July 2, 2025 by Mickey
Size: 1/8" 3/16" 1/4" 3/8"
Number of Items: 4
Top quality end mills. PVD coating is nice and consistent. Surface finish is great. Grinds are spot on perfect, razor sharp. Shafts are cleanly laser marked which is always a sign of quality tooling. Nice set of end mills.
Reviewed in the United States on June 26, 2025 by Tim James Tim James
Size: 1/4 in
Number of Items: 1
Sharp flutes and cuts with minimal marring. Price is decent. So far the tips haven't chipped off and it still looks new.
Reviewed in the United States on May 30, 2025 by J. Overton
Size: 1/4 in
Number of Items: 1
I keep cautioning about knowing your speeds/feeds with flute count and it's the same for these. The AlTiN coating seems to be holding up well and preventing any excess wear and build-up, but the moment it does wear, it wears fast and you may as well chuck it, or get it re-dipped/re-coated. It's been tough though and held up well until the coating wore.
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Reviewed in the United States on February 25, 2025 by Amazon Customer