Hertel C.E96.S18D Tap Drill Set 18 Piece Hss

Product Description

The HERTEL C.E96.S18D is an 18-piece tap drill set covering standard hand taps from 6-40 up to 1/2-20 thread sizes, paired with matching drill sizes ranging from 25/64 to 29/64 inches in fractional, letter, and wire gauge sizes. All drills and taps are manufactured from high speed steel for durability across a range of materials. The set features a plug chamfer tap style, which is the standard starting choice for through-hole and most blind-hole tapping operations. It ships in a metal case that organizes all 18 pieces and keeps them protected between uses. Machinists, maintenance mechanics, and tool-and-die professionals reach for this set when they need a matched drill-and-tap combination ready to go.

This set is suited for general-purpose threading work in machine shops, maintenance and repair operations, and production environments. It covers a practical range of unified national fine and coarse thread sizes encountered in everyday fastener work on steel, aluminum, brass, and similar metals. The included drill sizes span wire gauges 3 through 33, letter sizes I and Q, and fractional sizes 25/64 and 29/64 inches, giving technicians the correct clearance and tap drill diameter for each thread in the set without hunting for individual pieces.

Key Features

• 18-piece set covering tap sizes 6-40 through 1/2-20 with matched drill sizes
• High speed steel construction for both taps and drills
• Plug chamfer on taps for standard through-hole and blind-hole tapping
• Drill sizes included in wire gauge, letter, and fractional inch formats
• Organized metal case keeps all 18 pieces sorted and protected
• Standard hand tap style compatible with tap handles and tapping heads

Compatibility

Designed for standard hand tapping operations using unified inch thread forms; fits conventional tap handles and machine tapping attachments sized for the included tap shank diameters across the 6-40 to 1/2-20 range.

Installation Notes

Tapping operations should be performed by a qualified machinist or maintenance mechanic familiar with proper speeds, feeds, and cutting fluid selection for the workpiece material. Always secure the workpiece before drilling or tapping, and use a cutting or tapping fluid appropriate for the base metal to extend tool life and reduce the risk of tap breakage. Select the correct tap drill size from the set for the desired thread before drilling, then use the matched tap to cut threads. Follow applicable shop safety standards and wear appropriate eye protection during all drilling and tapping operations.