Chicago-latrobe 68984 Letter P Hss Jobber Drill Bit

Product Description

The CHICAGO-LATROBE 68984 is a jobber-length drill bit sized at Letter P (0.3230 inches) designed for heavy-duty drilling in steel alloy and similar ferrous materials. Built from high-speed steel with a bright uncoated finish, it features a 135-degree split point that reduces walking and allows drilling to begin without a center punch in most applications. The parabolic flute geometry improves chip evacuation at higher feed rates, which reduces heat buildup and extends tool life. This is a right-hand cut bit with a straight-cylindrical shank, suited for standard drill chucks across a range of stationary and handheld drilling equipment.

This bit is intended for trade and industrial use where steel alloy workpieces are common, including HVAC fabrication, structural metalwork, plumbing rough-in through metal framing, and general mechanical assembly. The Series 150DH designation indicates a heavy-duty grade construction. With a flute length of 3-5/16 inches and an overall length of 4-5/8 inches, it fits comfortably in standard jobber-length drill setups. It is suited for machinists, pipefitters, ironworkers, and HVAC sheet-metal technicians who need consistent hole geometry in harder materials.

Key Features

• Letter P size: 0.3230 inches diameter with a tolerance of -0.0010 to 0.0000 inches
• 135-degree split point reduces bit walking and improves positioning accuracy
• Parabolic flute design promotes fast, efficient chip removal in steel alloy
• High-speed steel construction rated for heavy-duty grade applications
• Web-thinned tapered web reduces thrust requirements during drilling
• Straight-cylindrical shank fits standard 3-jaw drill chucks without adapters

Compatibility

Designed for use with standard drill chucks accepting a 0.3230-inch straight-cylindrical shank. Primary workpiece material is steel alloy; suitable for applications requiring a jobber-length, right-hand cut bit in the 0.3000 to 0.3500 inch diameter range.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with drill press and handheld drilling equipment. Secure the workpiece firmly before drilling and ensure the chuck is tightened properly to prevent shank slippage. Always wear appropriate eye protection and follow applicable workplace safety standards when operating drilling equipment. Do not exceed the recommended speed and feed for the workpiece material to avoid premature wear or breakage.