Value Collection 01100270 Drill Blank 27/64 in Hss

Product Description

The VALUE COLLECTION 01100270 is a high speed steel drill blank ground to a 27/64 inch (0.4219 inch decimal) diameter with an overall length of 5-3/8 inches. Drill blanks are unfluted, precision-ground cylindrical rods used as raw stock for custom tooling fabrication, including special-purpose drills, reamers, punches, and gauges. This blank ships with a bright, uncoated finish, leaving the base HSS surface exposed for secondary operations such as grinding, sharpening, or coating. Machinists, tool-and-die makers, and maintenance technicians working in job shops or industrial facilities are the primary users of this type of stock.

This drill blank is suited for applications where a standard off-the-shelf drill geometry does not meet the job requirement. Common scenarios include fabricating a custom step drill, creating a specialized reamer, or machining a punch to a non-standard profile. The 5-3/8 inch overall length provides adequate stock for most bench-grinder or surface-grinder sharpening operations. The high speed steel construction tolerates the heat generated during grinding and light-duty cutting operations without rapid edge breakdown.

Key Features

• 27/64 inch (0.4219 inch) diameter for precise fractional sizing
• 5-3/8 inch overall length provides ample stock for custom tooling fabrication
• High speed steel construction resists heat and wear during secondary grinding operations
• Bright, uncoated finish ready for direct use or downstream coating processes
• Cylindrical, unfluted blank geometry suitable for punches, reamers, and special drills

Compatibility

Designed as a general-purpose HSS drill blank for use in tool-and-die, machining, and maintenance applications requiring a 27/64 inch diameter cylindrical stock piece.

Installation Notes

A licensed machinist or tool-and-die technician should handle all secondary grinding or profiling operations on this blank. Secure the blank firmly in an appropriate fixture or chuck before any grinding work to prevent movement. Allow adequate cooling time or use cutting fluid during grinding to avoid overheating the HSS material, which can soften the steel and reduce tool life. Wear appropriate eye protection and follow shop safety protocols when operating bench or surface grinders.