Machinist drill bits are designed for the most precise drilling and machining operations. These bits are made from the highest quality materials, ensuring durability and accuracy. They come in a variety of sizes and styles, including high-speed steel, cobalt, and titanium for the toughest jobs. The 135-degree split point design prevents walking and eliminates the need for a center punch, making these bits ideal for drilling into hard metals. The flute design allows for fast chip evacuation and precise drilling in a variety of materials. Whether you’re a professional machinist or a hobbyist, machinist drill bits are the perfect choice for precise and accurate drilling.
Top 10 Picks Best Machinist Drill Bits, Reviews In 2023
1#. 60pc Drill Bit Set M2 HSS High Speed Steel Bits Numbered #1-60 Metal Case
Features
Number sizes from #1 to #60 (0.228″-0.040″ or 5.79mm-1.02mm)
Ideal for drilling holes to be tapped & other precision jobs
Surface treated features abrasion resistance & chip ejection
Includes heavy duty metal index box. Please note the metal case color is black
2#. COMOWARE Number Size Drill Bit Set 60pcs- Jobber Length Drill Bits, Wire Gauge 1 to 60, Black and Gold Finish, 135° Split Point, High Speed Steel with Metal Indexed Storage Case
Features
High Quality Material – Versatile general-purpose drill bit set, High Speed Steel, black and gold finish resists corrosion and increases the hardness of the drill bit.
135-degree Point Tip & Twist Design – Increases cutting speed with self-centering and prevents walking, clears chips and particles faster. Produced by precision fully ground which ensures chips move smoothly.
Professional and Widely Use – Great drill bits set for metal/ wood/ plastic. Suitable for Home DIY, and General Building/ Engineering/ Woodworking Use.
Set Including – The set includes wire gage size #1 to #60, can meet your different demands perfectly.
Organized Holder – Set includes the drill bit holder with size index for easy storage and organizing.
3#. TICONN 99PCS Titanium Coated Drill Bit Set, 135 Degree Tip HSS Drill Bits Kit with Storage Case for Steel, Aluminum, Copper, Soft Alloy Steel, Wood, Plastic Size from 1/16″ to 3/8″
Features
[PREMIUM QUALITY] TICONN drill bits are made from premium quality titanium coated high speed steel (HSS). These bits will stay sharper, last longer, and can drill at higher speeds than uncoated and oxide-coated drill bits. Double U shape flutes design clear chips effectively
[WIDE APPLICATION] 135° point angle drill bits keep centered without a pilot hole. These jobber self-centering drill bits have the rigidity and length for most applications of corded or cordless hand drills and drill presses. Ideal for drilling mild steel, aluminum, copper, soft alloy steel, wood, and plastic
[SIZE LIST] 14 different sizes including 16PCS 1/16″, 16PCS 5/64″, 15PCS 3/32″, 10PCS 7/64″, 10PCS 1/8″, 8PCS 9/64″, 8PCS 5/32″, 3PCS 11/64″, 3PCS 3/16″, 2PCS 13/64″, 2PCS 7/32″, 2PCS 1/4″, 2PCS 5/16″, and 2PCS 3/8″
[EXTRA CENTER PUNCH] A rugged case keeps all drill bits well organized. Molded size on the case lid will help you to identify the bits you need with less effort. Included center punch will help you to mark and drill more precisely.
[TICONN BRAND QUALITY COMMITMENT] We stand behind the quality of our products. If for any reason you are not satisfied with your purchase, please contact us. We provide 30-day money back and lifetime warranty. 100% Satisfaction Guarantee for risk-free shopping!
4#. GMTOOLS 115Pcs Cobalt Drill Bits Set, M35 High Speed Steel, 135 Degree Tip, Twist Jobber Length Drill Bit Kit for Hardened Metal, Cast Iron, Stainless Steel, Plastic and Wood with Metal Indexed Storage Case, 1/16″-1/2″
Features
115 Pieces Set Includes: 29pcs Fractional Size: 1/16 to 1/2 inch bits in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60; Set includes the drill bit holder with size index for easy storage and organizing
Perfect Drill Bits: Precision grinding process for a clean surface and high grinding accuracy. Universal round drill shank, widely applicable of tool holding systems and tightly clamped
135° Split Point & Twist Design: The 135 degree fast cutting point is automatically centered and penetrates quickly with less pressure, reducing walking, fully ground drill bit with sharp and durable cutting edge. Twist design for clear chips faster
Enhanced M35 Alloy Material: These drill bits contain 5% Cobalt alloy steel, which increases wear resistance and durability. Industry grade 6542 high speed steel drill bit set, harder than 4241 HSS used in other similar drill bits set
QUALITY COMMITMENT: If for any reason you are not satisfied with your purchase, please contact us. We provide 30-day money back. 100% Satisfaction Guarantee for risk-free shopping!
5#. HIDOTOL Cobalt Drill Bit Set 115 PCS – M35 High Speed Steel Twist Jobber Length Drill Bits for Hardened Metal, Stainless Steel, Cast Iron, Plastic and Wood, 1/16″-1/2″, A-Z, 1-60
Features
High Quality Material – High Speed Steel M35 (Cobalt 5%) provide extended tool life compared to ordinary drill bits when drilling hard materials.
Characteristics – 135° split point with round straight shank, self-centering prevent walking, make drilling precise and faster. Fully Ground twist design helps clear particles faster, decreases friction and heat for a cooler drilling performance.
Widely Used – M35 Cobalt High Speed Steel is more suitable for tough, high tensile strength material. Particularly successful in cutting harden metals such as stainless steel, cast iron, high temperature alloy, titanium alloy, hard plastics and woods, and it also can be used for softer materials.
Specifications – 115pcs includes 29pcs fractional size 1/16”-1/2” by 1/64″ Increments, 26pcs letter sizes A to Z, 60pcs numbered wire gauges #1 to #60.
100% Satisfaction Guarantee – If you are not fully satisfied with our product for any reason, please feel free to contact us, we will try our best to serve you.
6#. Countersink Bit Set for Metal, M2 Cobalt Countersunk Bits 5 Pieces, 1/4″ Hex Shank Countersunk Bit Set for Drilling in Copper, Aluminum, Wood, Plastic
Features
✅【Five-blade design】Each countersunk drill adopts five-blade blade design, which can reduce vibration and prolong life, achieve smoother drilling, with 1/4″ metal hex.
✅【Compact Grinding】Precision grinding 82° tip for drilling holes on most medium hardness stainless steel, copper, aluminum, wood, plastic.
✅【M2 HSS Cobalt Layered Drill Bits】M2 Cobalt Coated, each metal countersunk drill bit is made of high quality M2 HSS material, this countersunk drill bit set is excellent in heat, corrosion and rust resistance to reduce friction and run cooler.
✅【Universal Compatibility】Surface black oxide treatment increases corrosion resistance, and the five-blade design helps create a strong connection between the screw and the material.
✅【Clear Sizes】Meticulously crafted drills with very high visibility numbers available in very common 1/4″, 3/8″, 1/2″, 5/8″ and 3/4″ drill sizes.
✅【100 extra-long warranty period】：if you have any questions about the product, please contact us and we will answer you within 12 hours. If the hexagonal handle breaks, refund or replace for 100% .
7#. 7 Pieces Center Drill Bits Set, M2 High Speed Steel 60-Degree Angle Center Drill Bits Kit Countersink Tools for Lathe Metalworking Size 1.0 1.5 2.0 2.5 3.0 4.0 5.0
Features
Wide Range of Sizes: Including 7 Pieces of Plain Center Drill Bits Set range in size 1.0 1.5 2.0 2.5 3.0 4.0 5.0 to meet different needs
Accurate: A 60-Degree Angle center drill is very useful in drilling accurate center holes, 60-degree countersink holes or starter holes for bigger drill bits in metal-working
High Quality: Our center drill bits made of high quality M2 High speed steel, solid and high temperature wear resistant
Widely Applicable: work with lathe machines and most electronic drills to drill holes in Steel, Iron, Alum, Carbon Steel, Brass and other tough material ranging from 170HB up to 200HB
Worry Free: This Center Drill Bits set comes with a portable storage case for convenient use and store. If you encounter any problems with the products, please feel free to contact us
8#. COMOWARE Cobalt Drill Bit Set- 115Pcs M35 High Speed Steel Twist Jobber Length for Hardened Metal, Stainless Steel, Cast Iron and Wood Plastic with Metal Indexed Storage Case, 1/16″ – 1/2″
Features
115 PIECES INCLUDED: 29pcs Fractional Size:1/16” to 1/2” in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60.
HSS WITH 5% COBALT: Durable, Higher Heat & Abrasion Resistance.
PRECISE 135° SPLIT POINT & TWIST DESIGN: Prevent walking, clear chips and particles faster.
PROFESSIONAL & WIDELY USE: M35 Cobalt HSS is more suitable for hardened material. Particularly successful in cutting through hard metals such as stainless steel, cast iron, high temperature alloy, titanium alloy, hard plastics and woods, and also can be used for softer materials.
ORGANIZED HOLDER: Set includes the drill bit holder with size index for easy storage and organizing.
9#. IRWIN Drill Bit Set, M35 Cobalt Alloy Steel Steel, 29-Piece (3018002)
Features
Sizes 1/16 inch -1/2 inch in 1/64 inch increments, 135 Degree Split Point To Minimize Walk
5% Cobalt Alloy Steel For Higher Heat & Abrasion Resistance
Heavy Duty Web Construction For Strength & Durability
10#. Chicago Latrobe 57728 150 High-Speed Steel Jobber Length Drill Bit Set with Case, Black Oxide, 118 Degree Conventional Point, Combination, 115-Piece
Features
Set of 115 jobber length drill bits includes inch sizes 1/16″ through 1/2″ in 1/64″ increments, one each of letter sizes A through Z, and one each of wire gauge sizes #60 through #1
High-speed steel (HSS) provides hardness for wear resistance
Black oxide finish reduces bit wear while promoting chip and coolant flow on ferrous material
118-degree conventional point for a range of drilling applications
Jobber length drill bit has a midrange drilling depth suitable for general-purpose drilling applications
Made in the USA
