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Jobbers-Length Twist Drill Bit: Individual, Regular Spiral, 135° Point Angle, Split, Super Life TiAlN, Cobalt Steel, 21/64 in Drill Dia

Item # 259U489

$24.97 Each

Product Specs

Flute Type: Spiral
Point Angle: 135 °
Point Type: Split
Surface Finish: Super Life TiAlN
Bit Material: Cobalt Steel
Drill Diameter Measurement System: Inch
Cutting Direction: Right Hand
Drill Diameter: 21/64 in
Decimal Equivalent: 0.3281 in
Flute Length: 3 5⁄16 in
Overall Length: 4 5⁄8 in
Quantity: Individual
For Use On (Best): Steel; Stainless Steel; Cast Iron
Shank Type: Round
Aircraft Drill: Yes
Depth x Diameter Ratio: 3.5xD
Double Margin: No
Drill Bit Style: Spiral
Drill Diameter Tolerance: 0.000 in to +0.001 in
Drill Length Type: Jobbers Length
Drilling Application: Conventional Drilling
For Use On (Good): Auminum; Copper; Brass
For Use On ISO Code (Best): P; M; K
For Use On ISO Code (Good): N
Helix Angle: 32 °
Material Grade: M2
Number of Flutes: 2
Powdered Metal Material: No
Series: 550TA
Shank Diameter: 0.3281 in
Sheeter Drill: No
Specifications Met: NAS 907 Type J; DIN 338
Spiral Direction: Right Hand
Through Coolant: No
Web Construction: Parallel
Web Thinning: Web-Thinned

Compliance and Restrictions

Country Of Origin

  • USA

About Jobbers-Length Drill Bits

The most common drill bit length, jobbers-length bits provide a good balance of strength and accuracy for versatility in a wide range of drilling applications.

A good choice for demanding drilling applications, cobalt steel drill bits provide more wear resistance at higher speeds than high speed steel drill bits. They are suitable for drilling into hard materials such as hard steels, stainless steel, titanium alloys, and nickel alloys.