Hertel 04618732 No. 12 Wire Size Split Point Drill Bit Hss

Product Description

The HERTEL 04618732 is a short-length threaded shank drill bit designed for precision drilling in low-tensile strength materials. Built from high speed steel with an oxide coating, this bit features a 135-degree split point with web thinning for self-centering entry and reduced thrust. The hex shank threads to a 1/4-28 connection, making it compatible with threaded-shank tool holders common in production and close-quarters drilling setups. Overall length is 1.25 inches with a flute length of 0.5625 inches. The spiral flute runs right-hand with a regular helix and tapered web configuration. At 0.189 inches in diameter, this bit corresponds to a No. 12 wire gauge size. It meets NAS 965 Type B specification.

This bit is suited for light-duty production drilling, sheet metal work, and precision assembly applications where a threaded hex shank is required for positive drive and repeatable positioning. The short overall length and web-thinned split point make it well suited for drilling in tight spaces or fixtures where standard-length bits would not fit. It is intended for use in low-tensile strength materials such as aluminum, soft steel, plastics, and similar substrates. Machinists, aerospace assemblers, and general fabricators are the primary users of this style of threaded shank drill.

Key Features

• No. 12 wire gauge size — 0.189 inches decimal equivalent
• 135-degree split point with web thinning for self-centering and reduced walking
• 1/4-28 threaded hex shank for positive engagement in threaded shank holders
• High speed steel construction with oxide coating for wear resistance
• Short overall length of 1.25 inches — suited for confined or fixtured drilling
• Meets NAS 965 Type B specification for aerospace and precision applications

Compatibility

Designed for use with 1/4-28 threaded shank tool holders and drill motors. Intended for general-purpose drilling in low-tensile strength materials per the NAS 965 Type B specification.

Installation Notes

This bit is installed by threading the 1/4-28 hex shank directly into a compatible threaded shank holder — ensure the shank is fully seated and torqued per the tool holder manufacturer guidelines before operation. Always power down or de-energize the tool before changing bits. Use appropriate cutting fluid or lubrication when drilling metals to extend tool life. Inspect the split point and cutting edges for wear before each use and replace when chipping or rounding is evident.