Reviews Tapered Drill Steel

Greenfield Threading 330088 Metric High Speed Steel Jobber Drill Plug Hand Tap Set (18-Piece Set)

Features：003cbr003e 1：Complete hole drilling, tapping, deburring and countersinking in one operation with power impact tool.003cbr003e 2：Back tapered beyond tap to prevent thread damage from over-drilling.003cbr003e.
3：Made from high-speed steel, these combination drill and tap bits are designed to tap up to 10-gauge wood, plastic copper, brass, aluminum, sheet metal and other soft materials. They are not suitable for drill and tap in very hard metals..
4:A perfect countersink drill bit set, a perfect tap and die set, two in one, one-step processing, greatly save processing steps and time costs, improve working efficiency..
5:High speed steel construction provides extra durability to drill bits to perform multiple drilling operations while maintaining its strength..
6:Self-centering point, do not need assistant center drilling or center punching..

Each center drill has a double end and with standard milling Angle 60 °.
Used for parts that need to be machined between production centers or work piece center holding.
Prefabricated precise positioning for hole processing, guide the drill for hole machining, so reducing error, center hole machining for the end surface of the shaft and other parts.
The center is used to make tapered holes for the center of the lathe in order to keep the standard twist drill in place so as to prevent the screw from slipping or deviating.
These center drill set are made of high speed steel, high hardness and durable in use.

Tapered neck design significantly reduces drill & tap breakage.
The 135 degree split point drill permits holes to be cut at high speeds. Taping caution must be adhered to with slower speed..
Superior strength durability provided by high Molybdenum content and high speed steel with functional black and gold surface treatment that holds lubricant for smoother drilling..
Applications include: Construction, Electrical, Maintenance, Industrial, Automotive, Farm Implement Machinery, HVAC. Cuts steel, cast iron, aluminum, bronze, brass, zinc and some stainless steel..
Contents include: 6-32, 8-32, 10-24, 10-32, 12-24, 1/4-20, 5/16-18, 3/8-16, 7/16-14, 1/2-13.

Tapered neck design significantly reduces drill & tap breakage.
The 135 degree split point drill permits holes to be cut at high speeds. Taping caution must be adhered to with slower speed..
Superior strength durability provided by high Molybdenum content and high speed steel with functional black and gold surface treatment that holds lubricant for smoother drilling..
Applications include: Construction, Electrical, Maintenance, Industrial, Automotive, Farm Implement Machinery, HVAC. Cuts steel, cast iron, aluminum, bronze, brass, zinc and some stainless steel..
Contents include: 6-32, 8-32, 10-24, 10-32, 12-24.

135-degree split point tip of the drill bits for wood, metal or plastic is designed to help reduce walking.
DEWALT drill bit set is made from High Speed Steel to be used in plastic, wood, and metal.
Tapered web design for extreme durability and resisting breakage of the drill bits.
Black and gold coating to help prevent rust and wear.
3-Flats shank to reduce spin-out in the chuck*.
Size markings on the drill bit shank for identifying sizes quickly.
Black oxide finish for greater wear protection.
Parabolic flute design for greater bit strength.
135-degree split-point design reduces slip and walking.
Includes tough case container to keep bits organized.

HSS Titanium Coating - Jefe Hex Titanium (TIN) coated Drill Bit can offer 3 times longer life than drill bits without coating..
Hex Shank - 1/4 inch Hex shank can be fit in quick-change chuck easily. And it can transit high torque from power tools to the working part of drill bit. Hex shank also eliminates the frustration of shank spinning in chuck. There is an ENHANCED TAPERED WEB in the drill bit that greatly increases the drill bit's strength and reduces premature breakage..
Accuracy - 135° split point geometry ensures accurate start and reduces walking on the working surface. Solid bonding technology eliminates radial runout and improves concentricity. High torque, Impact-rated..
Multi-Function - Jefe Hex drill bits are built for general purpose applications, such as DIY projects, home maintenance and MRO (Maintenance, Repair and Operations). Ideal for use in steel, copper, aluminum, zinc alloy, cast iron, wood and plastics..
Package & Size - 13 Pieces drill bits in a double blister pack with easy opening design. 135° Split- point, hex shank drill bits..

Tapered neck design significantly reduces drill & tap breakage.
The 135 degree split point drill permits holes to be cut at high speeds. Taping caution must be adhered to with slower speed..
Superior strength durability provided by high Molybdenum content and high speed steel with functional black and gold surface treatment that holds lubricant for smoother drilling..
Applications include: Construction, Electrical, Maintenance, Industrial, Automotive, Farm Implement Machinery, HVAC. Cuts steel, cast iron, aluminum, bronze, brass, zinc and some stainless steel..
Contents include: 1/4-20, 5/16-18, 3/8-16, 7/16-14, 1/2-13.

Tapered neck design significantly reduces drill & tap breakage.
The 135 degree split point drill permits holes to be cut at high speeds. Taping caution must be adhered to with slower speed..
Superior strength durability provided by high Molybdenum content and high speed steel with functional black and gold surface treatment that holds lubricant for smoother drilling..
Applications include: Construction, Electrical, Maintenance, Industrial, Automotive, Farm Implement Machinery, HVAC. Cuts steel, cast iron, aluminum, bronze, brass, zinc and some stainless steel..
Contents include: 1/4-28, 5/16-24, 3/8-24, 7/16-20, 1/2-20.

3-IN-1 METRIC DRILL BIT SET: This innovative drill and tap set does three jobs in one, adding speed and efficiency to any job. Each bit piece provides hole drilling, tapping, and countersinking for a quick and complete job..
1/4-INCH HEX SHANK: Each bit features a convenient 1/4-inch hex shank with a tapered end to prevent overtapping and minimize oversized holes. This tap drill-bit set also includes a quick-change adapter for effortless bit changes..
VERSATILE COUNTERSINKING DRILL-BIT SET: A must for any drill, this set contains 6 SAE drill bits, 6 metric drill bits, and a quick-change adapter. The bits can drill through a wide variety of materials, including sheet metal, plastic, copper, and more..
HIGH-QUALITY DRILL TAP SET: Each piece in this bit kit is made from durable high-speed steel. The steel construction ensures sharp, fast execution with superior performance and minimal wear and tear..
CONVENIENT PLASTIC CASE: The rugged molded plastic case is lightweight and durable for easy storage and organization. The swivel feature holds the bits securely in place for fast changes..