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Maintenance-Length Twist Drill Bit: Individual, Regular Spiral, 135° Point Angle, Split, Black & Gold Oxide, High Speed Steel, 3-Flat

Item # 968R578

$9.01 Each

Product Specs

Flute Type: Spiral
Point Angle: 135 °
Point Type: Split
Surface Finish: Black & Gold Oxide
Bit Material: High Speed Steel
Drill Diameter Measurement System: Inch
Shank Type: 3-Flat
Drill Diameter: 15/32 in
Decimal Equivalent: 0.4688 in
Flute Length: 3 1⁄8 in
Overall Length: 4 3⁄4 in
Quantity: Individual
For Use On (Best): Steel; Cast Iron; Heat-Resistant Alloys; Nonferrous Metals
Cutting Direction: Right Hand
Aircraft Drill: No
Depth x Diameter Ratio: 6xD
Double Margin: No
Drill Bit Style: Spiral
Drill Length Type: Screw Machine Length
Drilling Application: Conventional Drilling
For Use On (Good): Plastic; Wood
For Use On ISO Code (Best): N1; N4; N3; P2; K; S2
For Use On ISO Code (Good): O
Helix Angle: 30 °
Material Grade: M2
Number of Flutes: 2
Powdered Metal Material: No
Shank Diameter: 4688⁄10000 in
Sheeter Drill: No
Specifications Met: ANSI
Spiral Direction: Right Hand
Through Coolant: No
Web Construction: Parallel-Tapered
Web Thinning: Web-Thinned

Compliance and Restrictions

Country Of Origin

  • China

About Maintenance-Length Drill Bits

Also called mechanics-length drill bits, maintenance-length drill bits are slightly shorter than the standard jobbers-length drill bit, providing better rigidity but less drilling depth.

The most common choice for general purpose drilling applications, high speed steel drill bits are compatible with a range of materials, including soft steels, carbon steels, wood, and plastic.

Black & gold oxide coating increases wear resistance for extended tool life and helps retain lubricants, improving chip flow and drilling performance. This coating is recommended when drilling ferrous metals and should not be used on nonferrous metals.