Finding the best drill 4.2mm suitable for your needs isnt easy. With hundreds of choices can distract you. Knowing whats bad and whats good can be something of a minefield. In this article, weve done the hard work for you.
Reviews
1. Uxcell a15071400ux0125 Straight Round Shank 4.2mm Diameter Drilling Twist Drill Bit (Pack of 2)
Feature
Total Length: 72mm/2.8"; Shank Diameter: 4.2mm/0.17"; Product Name: Twist Drill BitPackage Content: 2 x Twist Drill Bit; Material: Stainless Steel
Net Weight: 14g; Flute Length: 40mm/1.6"
Bit Diameter: 4.2mm/0.17"; Feature: Straight Shank
Color: Brass Tone; Flute Number: 2
Description
Stainless Steel twist drill bit with straight shank, sharp spiral groove. Used widely to drill the metal and marble, is easy to install. The twist drill bit is used with electrical drilling machine.(here is not included).2. Bovidix 1902103523 Drill Bit Set Titan, Metric, 22-Piece
Feature
22 Drill Bits, Center punch, Metal box Multibox: size-SHSS Titanium DIN 338
Industrial quality
Description
2103523-Drill Bit-HSS TITANUM DIN-338: 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.2 mm, 3.5 mm, 4 mm, 4.2 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, Center punch - 4 mm; - Metal box Multibox: size-S3. 16PCS Twist Drill Bit Set, Gazeto 1mm-10mm M35 HSS Metal Drill Bit Industrial Tool for Stainless Steel, Steel, Copper, Iron, Aluminum, Wood And Plastic
Feature
HSS Drill Bit Set For Stainless Steel, Steel, Copper, Iron, Aluminum, Wood And PlasticSteel extends cutting edge life and maintains cutting life after resharpening.
Ideal For DIY, Home, General Building / Engineering, Industrial Tool Using.
Containing Sizes 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.2mm, 3.5mm, 4.0mm, 4.2mm, 5.0mm, 5.2mm, 6.0mm, 6.5mm, 8.0mm, 8.5mm, 10mm.
To enhance the surface hardness of the drill to improve machining accuracy and improve the quality of the surface of the drill to reduce the friction coefficient with the workpiece processing, titanium and improve temperature resistance and wear resistance, thereby increasing the processing speed for high-speed processing
Description
Different types of drill bits are used to cut holes in different types of materials.This set of Migiwata M35 cobalt steel drill bits are particularly successful in cutting through hard metals such as stainless steel and cast iron, although they can be used for softer materials, too.
Cobalt drill bits are not made of pure cobalt, but rather a steel alloy with certain percent cobalt. The 5-percent alloy is known as M35 grade.
The cobalt increases the strength of the steel and makes it more heat-resistant; this is an important factor in drilling hard materials because the friction of metal against metal can produce high temperatures that damage the material or the drill bit.
Tests shows that the M35 cobalt steel drill bits can penetrate a 5mm-thick 304 stainless steel plate in 5 seconds.
Cobalt drill bits are more expensive than other drill bits, but if you regularly drill through metal, they are a good investment since they tend to last longer.
Notice: The working life of the drill bits can be largely prolonged by using with cooling liquid. The bits are not suitable for hardened steel.
Features:
HSS Drill Bit Set For Stainless Steel, Steel, Copper, Iron, Aluminum, Wood And Plastic
Ideal For DIY, Home and General Building/Engineering Using
High speed steel, Durable.
Specification:
Material: M35 High Speed Steel
Containing sizes: 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.2mm, 3.5mm, 4.0mm, 4.2mm, 5.0mm, 5.2mm, 6.0mm, 6.5mm, 8.0mm, 8.5mm, 10mm.
Package included:
1 x 1.0mm HSS Drills
1 x 1.5mm HSS Drills
1 x 2.0mm HSS Drills
1 x 2.5mm HSS Drills
1 x 3.0mm HSS Drills
1 x 3.2mm HSS Drills
1 x 3.5mm HSS Drills
1 x 4.0mm HSS Drills
1 x 4.2mm HSS Drills
1 x 5.0mm HSS Drills
1 x 5.2mm HSS Drills
1 x 6.0mm HSS Drills
1 x 6.5mm HSS Drills
1 x 8.0mm HSS Drills
1 x 8.5mm HSS Drills
1 x 10.0mm HSS Drills
4. CAIDU 9pcs Adjustable T-Handle Machine Screw Metric Thread Plug | M3 M4 M5 M6 Taps Set | 2.3mm 3.3mm 4.2mm 5mm HSS Twist Drill Bits | M3-M6 Wrench
Feature
Product Name: QST-CAIDU 9pcs Adjustable T-handle Machine Screw Metric Thread Plug + HSS Twist Drill BitsMaterial: HSS 4241, for wood, plastic, thin metal etc.
Product specifications: Wrench (M3-M6), Tap set (M3-M6), Twist Drill Bits (2.3mm, 3.3mm, 4.2mm, 5mm)
Number of products: T-handle Wrench x1, Tap x4, Drill x4
T-shaped or 7 word shap design, can one-hand operation, easy to use
Description
When you purchase more than 100 items, please send us a mail. We will give you the cheapest price! Factory direct sales, seeking strength partnersProduct Name: QST-CAIDU 9pcs Adjustable T-handle Machine Screw Metric Thread Plug + HSS Twist Drill Bits
Material: HSS 4241, for wood, plastic, thin metal etc.
Product specifications: Wrench (M3-M6), Tap set (M3-M6), Twist Drill Bits (2.3mm, 3.3mm, 4.2mm, 5mm)
Number of products: T-handle Wrench x1, Tap x4, Drill x4
T-shaped or 7 word shap design, can one-hand operation, easy to use
5. Draper Expert 4.2mm HSS Twist Drill Bit for 5 x 0.8 Taps by Draper
Description
Expert Quality, a selection of metric-sized high speed straight shank twist drills spe;Display packed one drill per card (sizes 4;2-10;2mm) and two drills per card (sizes 1;6-36. Dormer A191413 Jobber Drill Set, 1.5 mm - 6.5 mm x 0.5 mm + 3.3 mm, 4.2 mm Size
Feature
Set of 13 jobber length drill bits includes metric sizes 1.5 through 6.5 mm in 0.5 mm increments and sizes 3.3 and 4.2 mmHigh-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
Drill bits conform to DIN 338 standard
Description
This Dormer A191 jobber length drill bit set contains 13 high-speed steel drill bits, including metric sizes 1.5 through 6.5 mm in 0.5 mm increments and sizes 3.3 and 4.2 mm, with a black oxide finish and a 118-degree conventional point for use in general-purpose applications on ferrous material. High-speed steel (HSS) provides hardness for wear resistance, and the black oxide finish acts as a lubricant to reduce wear while promoting chip and coolant flow. These jobber length drill bits have a drilling depth up to four times their diameter. The round shank accommodates most drill chucks. The set comes in a plastic index case with labeled compartments for identification and organization. Drill bits conform to Deutsches Institut fr Normung (DIN) 338 standard. Drill bits are cutting tools used to make holes in a range of materials using machines such as handheld portable drills, machining centers, and lathes. Drill bits come in a variety of lengths and types, the most common of which is the twist drill bit. The round, twisted shaft of the twist drill bit typically has two cutting edges and flutes. The helical twist of the flutes brings chips up and away from the cutting edges and allows for coolant to reach the cutting edges. Jobber length twist drill bits, the most common length of twist drill bit, offer a good compromise of length and reach to work with the widest range of materials and applications. Mechanic's length twist drill bits (also called maintenance length) are a little shorter than jobber length and less prone to deflection when drilling. Short length twist drill bits (also called stub or screw-machine length) are the shortest and stiffest twist drill bits, helping to reduce the chance of deflection or breakage when drilling. Reduced shank drill bits (also called Silver and Deming drill bits) have a shank that is smaller in diameter than its shaft, permitting drilling machines with either a 1/2" or 3/4" drill chuck to create large holes. Long length twist drill bits (also called taper length) are a little longer than jobber length, allowing for deeper holes and longer reach. Extra long twist drill bits (also called extension) are longer than long length twist drill bits for greater reach or for drilling deeper holes.Dormer Pramet manufactures solid cutting tools under the brands Precision Twist, Dormer, and Union Butterfield.
7. 10Pcs/Set 4.2mm twist drill bit cobalt steel alloys metal professional drill bits wood drills brand power tool
Feature
Material: HSS - Co (M35) Color: as shown in pic Features: Made of cobalt material, rigid and durable. Triangle shank which is more solid and convenient. With a case, easy for storage and carrying.Great tools for drilling hole Application: suitable for thin metal, aluminum, iron, angle steel, carbon steel, 304 stainless steel. Specifications: Type: M35 Twist Drill Size:75 x 4.2mm
Quantity:10 Pcs/Set
Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you
Description
Warranty & return: For ensuring all the items are in good quality, we will test all products before the packages were sent out . 30 days warranty from the purchased date. Please contact us via email before returning the defective item. Return items should include the original packaging and all accessories.8. Dewalt DT50004-QZ Metal drill bit HSS-Tin shockproof, 4.2mm x 2.8" x 31mm
Feature
Suitable for portable drilling of steel, alloyed and non-alloyed up to 900 N/MM2Faster drilling - up to 4x faster than standard hss-r drill bits
Innovative tapered web greatly reduces breakage
Description
Raymond E. DEWALT followed in his father's steps, and worked in plants and construction after leaving school. In all fields of work he encountered the issue of high labor costs. To help reduce these costs, whenever possible he installed a machine to handle specific needs. One fine day, M. DEWALT was hired to head a wood mill, manufacturing numerous products, from basic boxes to complete houses. The amount of work exceeded the company's capacity by far, but its owner could not afford to increase the headcount. The only solution was to ensure his men produced more work. M. DEWALT built a yoke, which he connected directly to a motor and a saw. He then fitted it onto a standard arm. The saw could be raised, lowered, moved forward and backward, and adapted to all types of angles. With this system, he could handle the same amount of work as four men, reducing labor costs beyond his wildest imagination.9. uxcell 4.2mm Dia HSS Oxynitriding 2-Flute Straight Shank Twist Drill Bit Black 3pcs
Feature
Main Color: Black; Material: HSSPackage Content: 3pcs x Twist Drill Bit; Product Name: Twist Drill Bit
Weight: 19g; Total Length: 76mm/3 Inch
Flute Length: 48mm/1.89 Inch; Bit Diameter: 4.2mm/0.17 Inch
Flute Number: 2; Feature: Straight Round Shank
Description
Twist drill bit with straight round shank, sharp spiral groove.Used widely to drill the iron,thin aluminum plate and tile, etc.
Sharp and twisted flute will make the drilling be more easy and effortless.
The twist drill bit is used with electrical drilling machine(here is not included).
10. Dewalt DT4961-QZ Metal drill bit HSS-Co, 4.2mm x 2.95" x 43mm
Feature
Suitable for portable drilling of steel, alloyed and non-alloyed up to 900 N/MM2Faster drilling - up to 4x faster than standard hss-r drill bits
Innovative tapered web greatly reduces breakage
