Cleveland C54814 Hand Tap 11/16-11 Unc Plug 4-flute Hss

Product Description

The CLEVELAND C54814 is a straight-flute hand tap designed for cutting 11/16-11 UNC internal threads in a range of ferrous and non-ferrous materials. Built from high speed steel with a bright, uncoated finish, it delivers consistent thread geometry across both blind-hole and through-hole applications. The plug chamfer configuration — 3 to 5 threads of lead — makes it the standard choice for initiating and completing threads in pre-drilled holes without requiring a starter tap. With 4 flutes and an H3 thread limit, this tap produces Class 2B threads with the clearance needed for plated or coated fasteners. Machinists and tool-and-die professionals reach for the C54814 in production and repair environments alike.

This tap is suited for manual tapping operations in job shops, maintenance facilities, and light manufacturing settings. It handles blind-hole and through-hole threading in alloy steel, carbon steel, aluminum, and free-machining stainless steel. The right-hand thread direction and standard shank geometry make it compatible with conventional tap wrenches and hand-tapping setups. Series 1002 from CLEVELAND represents a workhorse line for general-purpose inch-thread tapping where consistent tolerances and reliable tool life are the primary requirements.

Key Features

• 11/16-11 UNC thread form, right-hand, Class 2B fit with H3 thread limit for controlled oversize tolerance
• Plug chamfer (3-5 thread lead) for starting and completing threads in blind or through holes
• 4-flute straight-flute geometry for balanced cutting action and chip control in ductile materials
• High speed steel construction for durability across steel, aluminum, and free-machining stainless applications
• Bright, uncoated finish — no coating buildup that could affect thread tolerance in tight-clearance fits
• No coolant-through requirement — suitable for manual tapping with standard cutting fluid application

Compatibility

Designed for manual hand-tapping operations in alloy steel, carbon steel, aluminum, and free-machining stainless steel workpieces requiring 11/16-11 UNC internal threads.

Installation Notes

This tap is installed and operated by machinists or maintenance technicians using a standard tap wrench sized to the 0.542-inch shank and 5/8-inch square drive. Always secure the workpiece and ensure the tap is aligned perpendicular to the drilled hole before applying torque. Apply appropriate cutting fluid for the workpiece material to extend tool life and improve thread finish. Back off periodically during tapping to break chips, especially in blind-hole applications.