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by Dormer

Dormer A191 High Speed Steel Jobber Length Drill Bit Set with Plastic Case, Black Oxide Finish, 118 Degree Conventional Point, Metric, 13 piece, 1.5 mm to 6.5 mm in 0.5 mm Increments + 3.3, 4.2 mm

4.8 out of 5 stars 23 customer reviews
| 5 answered questions

List Price: $41.90
Price: $19.81 ($19.81 / drill bit) & FREE Shipping on orders over $35. Details
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Specifications for this item
Brand Name Dormer
Part Number 30608
Material Type High-Speed Steel
Finish Types Black Oxide
Number of Items 1
Cutting Angle 118  Degrees
Cutting Direction Right-Hand
Drill Point conventional
EAN 7320760030608 , 5055413702305
Flute Type Spiral
Item Weight 3.52 ounces
Manufacturer Series Number A191
Overall Length 13  inches
Shank Type Round
Style Name Jobber
System of Measurement Metric
UNSPSC Code 20121600

This Dormer A191 jobber length drill bit set contains 13 high-speed steel d... See more product details


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Product Features

  • 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 mm
  • 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
  • Drill bits conform to DIN 338 standard

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Product Details

  • Product Dimensions: 1.8 x 1.8 x 5.6 inches ; 3.5 ounces
  • Shipping Weight: 5.1 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B0001P01ZI
  • Item model number: 030608
  • Average Customer Review: 4.8 out of 5 stars  See all reviews (23 customer reviews)
  • Amazon Best Sellers Rank: #5,540 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Frequently Bought Together

  • Dormer A191 High Speed Steel Jobber Length Drill Bit Set with Plastic Case, Black Oxide Finish, 118 Degree Conventional Point, Metric, 13 piece, 1.5 mm to 6.5 mm in 0.5 mm Increments + 3.3, 4.2 mm
  • +
  • SE - Drill Set - Mini, Sizes: 1.05 1.1 1.15 1.2 1.25 1.3, 15 Pc - 82616MD
Total price: $25.80
Buy the selected items together

Product 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 für 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.

Precision Dormer manufactures cutting tools under the brands Precision Twist, Dormer, and Union Butterfield. The company, headquartered in Crystal Lake, IL, meets International Organization for Standardization (ISO) standards 9001 and 14000.

What’s in the Box?

  • 13 drill bits, metric sizes 1.5 through 6.5 mm in 0.5 mm increments and sizes 3.3 and 4.2 mm
  • Plastic case

Customer Reviews

Top Customer Reviews

Verified Purchase
This set of metric drill bits (Dormer) is extremely well packaged in a durable compact and easy-to-use container that is better than the usual drill index. To get a drill, turn the top to the bit you want, then tip the container and the desired bit falls out of a hole in the top. I have only given them limited use, but so far they have proven to be of high quality.

GENERAL ISSUE: Amazon should carry a deeper selection of metric tools and hardware. I am switching my whole home shop to metric since most of what I've been working with lately is metric even when it is built "stateside". It's annoying to pay premium prices for items that are standard in the rest of the world.
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There isn't too much you can say about drill bits. One point to note, if you are unfamiliar with metric sizes, is that 6.5 MM is only around 1/4", so if you need large sizes, this set is probably not the one for you. If the small sizes cover your needs, this is about as inexpensive a set as you will find.
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Verified Purchase
I needed a full set of metric drill bits for work. They work well and do what I expect. They are not American made, but made in England.........not a problem for me at all.
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Verified Purchase
The drill bits are made of a decent material an don't snap the first time you use them like the ones at walmart. overall im happy
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Verified Purchase
I purchased these drills to complete the size range from another Dorman set I purchased (Dormer A190 High Speed Steel Jobber Drill Bit Set). These drills have been good so far. I use them for drilling into stainless and mild steel. I am a bit of a "roughy" on items like this and they have been forgiving whilst still getting the job done. There is nothing remarkable about the drills but I would buy them again for their money. They are worth the dollars wherever they are made, in my judgement, and they should last well with an occasional sharpening.
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Verified Purchase
It's hard to source metric drill bits locally and when you do, they are either super cheap crap or very expensive. I use these infrequently for RC hobby projects and have had no issues. They are sharp and feel like they are of good quality. The price is right for what you get and the storage container is very clever and handy. This was a good purchase and I have no regrets.
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Verified Purchase
It worked great for what I needed - exactly a 4.2mm drill bit, for which there isn't a close enough fractional or gauge equivalent. It let me drill a bunch of holes in an aluminum crankshaft pulley for tapping for M5x0.9 bolts. I used it in a craftsman drill press.

The real highlight is the case they are in! So fun! I just wanna play with the case!
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Verified Purchase
So, one bit here on Amazon is around $15 with shipping for special size bits (unless you want a one-time use bit) but I got all of these for $25. These is durable and very functional. Will most likley continue to add to my Dormer collection from this seller since the item arrived 4-6 days early (before New Year's).
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