These are 1/8" rivet drills( Actual size: # 30-(.1285") Great quality American made Colbalt or HSS drill bit. Made for Boeing by tool companies like Chicago Latrobe, Union Butterfield and Precision Twist Drill. They are all 5" to 6 " long,with about 1" of flutes, and have a Boeing .300 Quick Change shank, which can also be used in any conventional drill chuck 5/16" or larger.
You are looking at purchasing SIX (6) of these drill bits. Brand new in original packaging. Technical Specs Item Screw Machine Drill Type Standard Number of Pieces 6 Grade General Purpose Material High Speed Steel Finish Bright Point Type Conventi
You are looking at purchasing TWELVE (12) of these drill bits. Brand new in original packaging. Technical Specs Item Screw Machine Drill Type Conventional Point Number of Pieces 12 Grade General Purpose Material High Speed Steel Bright Point Type
Precision Twist Taper Length Drill #19 118 Deg HSS Hi Helix L 5 3/4" Flute 3 3/8" Precision Twist taper length drill bits have longer flutes and a longer overall length than jobber twist drill bits, which allows for deeper drilling. The shank diameter is the same as the drill bit size. High speed steel drill bits are for use with a wide variety of materials including steel, cast iron, and forgings.
Precision Twist Taper Length Drill #79 118 Deg HSS L 1 1/2" Flute 5/16" Precision Twist taper length drill bits have longer flutes and a longer overall length than jobber twist drill bits, which allows for deeper drilling. The shank diameter is the same as the drill bit size. High speed steel drill bits are for use with a wide variety of materials including steel, cast iron, and forgings.
Precision Twist Taper Length Drill #7 118 Degree HSS Overall Length 6" Flute L 3 5/8" Precision Twist taper length drill bits have longer flutes and a longer overall length than jobber twist drill bits, which allows for deeper drilling. The shank diameter is the same as the drill bit size. High speed steel drill bits are for use with a wide variety of materials including steel, cast iron, and forgings.
Precision Twist Taper Length Drill Parabolic #38 135 Deg HSS S/P L 4 5/8" Flute 2 1/2" Precision Twist Drill Parabolic flute drill bits, these have a large flute space for greater chip flow and improved coolant flow to the drill bit point. These factors allow bits to drill deeper and produce closer hole tolerances more quickly than regular jobbers bits. A large cross section increases rigidity and strength.
Precision Twist D444 Carbide-Tipped Drill #30 118 Deg HSS 1 5/8" Flute 2 3/4" L Carbide tipped drill bits can be run at speeds 2 to 2 1/2 times faster than regular high speed drill bits and create a better hole finish. Use on cast aluminum, bronze, cast and ductile irons, fiberglass, hard plastics, and other abrasive nonferrous metals. Not recommended for soft steel.
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