Tru-Cut HDC.234 15/64" Heavy Duty Black & Gold 135° Split Point Jobber Drill Bit

The Tru-Cut HDC.234 is a 15/64" (0.234") Heavy Duty Jobber Length Drill Bit from Tru-Cut's Galaxy HDC series, featuring a distinctive black and gold surface treatment and 135-degree split point geometry engineered for demanding metalworking applications.

Manufactured from premium M2 High Speed Steel (HSS), this bit is built with a heavy web construction that adds rigidity and extends service life under heavy cutting loads. The black and gold surface treatment retains cutting lubricant during drilling, reducing friction and heat buildup for smoother, faster penetration through hard materials including steel, stainless steel, cast iron, and high-tensile alloys.

Key Features:

• Size: 15/64" (0.234") diameter — fractional jobber length
• Point Geometry: 135-degree split point for self-centering starts — no pilot punch required
• Construction: Heavy web design for maximum rigidity and reduced bit deflection
• Surface Treatment: Black and gold finish for improved lubricity, abrasion resistance, and corrosion protection
• Material: M2 High Speed Steel (HSS), heat treated for extended cutting life
• Length Type: Jobber length — standard NAS 907 Type B specification
• Flute: Ground flute for consistent chip evacuation
• Compatible With: Hand drills, drill presses, and CNC machines

Tru-Cut Manufacturing has been producing precision drill bits in Cary, Illinois since 1957. The HDC Galaxy series is designed for professionals who demand consistent performance in high-volume or heavy-duty drilling operations on ferrous and non-ferrous metals.