Cleveland C55090 Tap Set 1/4-20 to 1/2-20 10 Piece Hss

Product Description

The CLEVELAND C55090 is a 10-piece tap set covering thread sizes from 1/4-20 through 1/2-20, designed for right-hand threading in metal and other machinable materials. Each tap features a 4-flute, plug chamfer geometry and is manufactured from high speed steel (HSS) with a bright finish. The plug chamfer style provides a balanced starting lead suitable for through-hole and most blind-hole applications. This set fits the needs of machinists, maintenance technicians, and trade professionals who require a consistent, versatile tap assortment for production or field repair work.

This tap set is suited for general-purpose threading tasks in HVAC equipment fabrication, plumbing fixture installation, electrical enclosure work, and mechanical maintenance. The range of 1/4-20 to 1/2-20 unified coarse threads covers the most common fastener sizes encountered in light to medium industrial and commercial service work. The bright finish indicates an uncoated HSS substrate, appropriate for use in steel, aluminum, brass, and similar materials at standard cutting speeds.

Key Features

• 10-piece set covering 1/4-20 through 1/2-20 thread sizes in a single kit
• 4-flute design promotes chip clearance and consistent thread form
• Plug chamfer geometry suitable for through-hole and most blind-hole applications
• High speed steel construction provides durability across a range of machinable materials
• Bright finish uncoated HSS for standard cutting speed applications
• Right-hand thread direction matches the most common fastener standard

Compatibility

Designed as a general-purpose replacement or addition to standard tap assortments used in light to medium mechanical, HVAC, plumbing, and electrical service applications requiring unified coarse right-hand threads from 1/4-20 to 1/2-20.

Installation Notes

Taps should be installed and operated by machinists or qualified trade technicians familiar with threading procedures and cutting fluid requirements. Always secure the workpiece firmly and use appropriate cutting oil or tapping fluid to extend tap life and improve thread quality. Do not exceed the recommended cutting speed for the material being tapped, and back off the tap periodically to break and clear chips. Follow applicable shop safety practices and equipment manufacturer guidelines when performing threading operations.