Chicago-latrobe 70316 Drill Bit Letter P 0.3230 in Hss Tin

Product Description

The CHICAGO-LATROBE 70316 is a jobber-length drill bit sized to letter P (0.3230 inches decimal equivalent), manufactured from high speed steel with a titanium nitride (TiN) coating. It is designed for general-purpose hole-making in metalworking and fabrication environments. The 118-degree standard point angle and web-thinned tip promote clean entry and reduce walking on ferrous materials. With an overall length of 4-5/8 inches and a flute length of 3-5/16 inches, this bit fits standard drill chucks and drill presses used by machinists, maintenance technicians, and metalworking tradespeople.

This bit is suited for drilling cast iron and steel in production and maintenance applications. The straight-cylindrical shank accommodates standard three-jaw chucks without modification. The regular spiral flute geometry supports chip evacuation at typical feed-and-speed parameters for HSS tooling. It conforms to DIN 338, making it dimensionally interchangeable with other jobber-length bits built to that standard. Single-piece packaging makes it practical for bench stock replenishment or individual job use.

Key Features

• Letter P sizing — 0.3230 inches decimal equivalent, with a diameter tolerance of -0.0010 to 0.0000 inches
• High speed steel construction with titanium nitride (TiN) coating for improved surface hardness and wear resistance
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust and cleaner starts
• Right-hand cut, regular spiral flute, 2-flute configuration for efficient chip removal
• Straight-cylindrical shank (0.3230 inches) fits standard drill chucks without adapters
• Conforms to DIN 338 jobber-length standard

Compatibility

Designed as a general-purpose jobber-length drill bit for use in steel and cast iron. Primary workpiece materials listed by the manufacturer are cast iron and steel.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or tradespeople familiar with drill press or hand-drill operation on ferrous materials. Secure the workpiece before drilling and confirm the chuck is fully tightened on the straight shank before starting the spindle. Consult manufacturer feed-and-speed recommendations for the specific material and machine setup. Do not exceed the rated capacity of the drilling equipment being used.