The Best #40 Drill Bit of 2021 – Reviewed and Top Rated

2,843 Reviews Scanned

Rank No. #1
Drill America DWDCO40P12 #40 Cobalt Drill Bit (Pack of 12), DWDCO Series
  • Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys
  • Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
  • Round shanks allow use with a wide variety of toolholding systems
  • When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
  • Ideal for drilling in tough, high tensile strength materials
Rank No. #2
TopLine USA M42 Cobalt #40 Drill Bits 6-Pk
  • High production grade M42 Cobalt
  • Jobber (standard) length; approximately 2.38"
  • 135-Degree Split Point
  • Pack of Six (6) in a labeled storage tube
  • Ground from Solid Blank; Heavy Duty
Rank No. #3
IVY Classic 01440 No. 40 Wire Gauge Drill Bit, M2 High-Speed Steel, 135-Degree Split Point, 12-Pack
  • Jobber length bits designed for drilling stainless and hard steel, plastic and wood, Premium Swift Bore (Registered Trademark)
  • Hardened and tempered M2 high-speed steel bits fall between standard fractional drill sizes
  • Precision ground, bright finish with polished flutes that increase chip ejection
  • 135-degree split point for fast penetration and accurate starting with no center punch
  • Wire Gauge Diameter: No. 40, Decimal Inches Equivalent: 0.0980, Overall Length: 2-3/8-inch
Rank No. #4
Drill America - DWDN40P12 #40 High Speed Steel Black Oxide Drill Bit (Pack of 12), DWDN Series
  • High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
  • Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge
  • Round shanks allow use with a wide variety of toolholding systems
  • When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
  • Ideal for production, maintenance or portable drilling jobs
Rank No. #5
Drill America #40 x 6" Cobalt Aircraft Extension Drill Bit, GLBCO Series
  • Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium
  • 135° split point tip prevents drill from walking
  • Round shanks allow use with a wide variety of tool holding systems
  • Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
  • 6" overall length for drilling where extra length for reach is required
Rank No. #6
Topline USA Drill Bit #40 (0.098") HSS Black Finish 6pcs
  • #40 wire size drill bit 0.098" (2.49mm)
  • Length approx 2 3/8" (60mm) - Jobber Length
  • Pack of 6 high speed steel drill bit set in a labeled reclosable package
  • Premium Quality High Speed Steel
SaleRank No. #7
Irwin Wire Gauge Drill Bit Hss, No. 40 Carded
  • Used where more precisely sized holes are required
  • Drills exact hole size; ideal for tapping
  • Bit is constructed of M-2 high speed steel for the best combination of strength, heat resistance, and wear resistance
  • Standard 118 deg point for use in wood, metal, and plastic
Rank No. #8
1-3/5 Inch 40mm Forstner Drill Bit Woodworking Hole Saw Wood Cutter, Professional Alloy Steel Wood Drilling Woodworking Hole Boring Bits Power Rotary Cutting Tool (Blue)
  • HIGH QUALITY: High quality alloy blade, hardened, tempered and carbon HSS steel construction make blade more sharp and durable. More smooth, less noise.
  • GREAT PERFORMANCE: Sharp edge, accurate positioning, high hardness, impact resistance, high precision, smooth cutting, high toughness. Forstner Drill Bits can drill clean flat bottom holes with no chipping.
  • PERFECT DESIGN: Small incision resistance, improve the opening speed. It's head adopt arc curve design, beneficial to chip removal, perforation is more efficient.
  • WIDE APPLICATIONS: Can be used for wood products perforation, mounted spherical door shoot tip, drawer, plastic products, wood, plywood, etc. Suitable for pistol drill, bench drill, vertical drilling machine hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine, etc.
  • PERFECT SIZE: The size of this hole saw is 40mm (1-3/5"). We provide many other size hole saw to meet your professional needs, such as 15mm (19/32"), 17mm (43/64"), 20mm (25/32"), 23mm (29/32"), 25mm (1"), 28mm (1-1 / 10"), 30mm (1-3 / 16"), 35mm (1-3 / 8"), 50mm (2"). Please choose your needed item.
Rank No. #9
#40 Carbide Jobber Drill 118° Standard Point, USA Made, Number 40 (.098"), 50347
  • 0.098" diameter solid carbide jobber length drill 118° standard point
  • 1" length of flute
  • 2" overall length
  • #40 size. Tool Diameter Tolerance: +0"/-.0005"
  • Used by machinists and hobbyists for general purpose drilling of most materials.
Rank No. #10
uxcell Forstner Drill Bits 40mm, Tungsten Carbide Wood Hole Saw Auger Opener, Woodworking Hinge Hole Drilling Boring Bit Cutter (Blue, Gray)
  • Specifications: Drilling dia.: 40mm; shank size: 9mm; drilling depth: 48mm; total length: 80mm. Round shank, cemented carbide cutter and solid hardened steel body. Rotation speed (suggested): 18000-24000 RPM, feed speed (suggested): 8-12M/Min
  • Applications: Can be used for drilling holes on wood and plastic products, furniture, door hinge. Used on cutting wood, plywood, solid wood boards, MDF, plastics, fiberglass etc.. Forstner drill bit is for ordinary purpose
  • Features: Tungsten carbide cutting tip with special heat treatment for sharp cutting edge, high hardness, non-burrs and durable use. Arc curve design head for easy chip-removal, more efficient perforation
  • How To Use: Suitable for bench drill, vertical drilling machine, hand held electric drill, impact drill, CNC carving machine and other drill press
  • Warm Tips: Can not be used for cutting metal holes. Before drilling, be sure no nails or other metal objects in wood to avoid causing damage to forstner drill bits. Please note the cutting depth before you purchase

Last update on 2021-01-13 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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