Eagle Cutting Tool HT-348-B-I Hss Hand Bottom Tap 3-48

Product Description

The EAGLE CUTTING TOOL HT-348-B-I is a 3-48 high-speed steel (HSS) hand bottom tap designed for threading operations that require cutting threads as close to the bottom of a blind hole as possible. The bottom tap geometry features minimal taper on the leading threads, allowing the tap to reach near the base of a hole where plug or taper taps cannot. Weighing 0.31 pounds, this is a compact, hand-driven tool suited for precision threading work in metal and other materials. It is appropriate for machinists, maintenance technicians, and trade professionals performing repair or fabrication tasks that call for 3-48 unified fine thread (UNF) profiles.

The HT-348-B-I is used in applications requiring a 3-48 thread form in blind holes where full thread depth close to the bottom is essential. Typical scenarios include threading small fastener holes in electrical enclosures, instrumentation panels, small-diameter fixtures, and light-gauge metal components. This tap is intended for hand use with a standard tap wrench and is not designed for machine tapping operations.

Key Features

• Bottom tap geometry for threading close to the base of blind holes
• High-speed steel (HSS) construction for durability across common metals
• 3-48 thread specification for small-diameter unified fine thread applications
• Hand-drive design compatible with standard tap wrenches
• Lightweight at 0.31 pounds for easy single-hand control

Compatibility

Designed as a hand bottom tap for 3-48 UNF thread applications in blind holes across general metalworking, maintenance, and repair operations.

Installation Notes

This tap is installed by hand using a properly sized tap wrench. Before tapping, ensure the pilot hole is drilled to the correct tap drill size for a 3-48 thread. Apply appropriate cutting fluid to reduce friction and extend tap life. Advance the tap slowly with even pressure and back off periodically to break chips and prevent binding or breakage.

Technical Specifications

• Thread Size: 3-48
• Thread Type: Unified Fine (UNF)
• Tap Style: Hand Bottom
• Material: High-Speed Steel (HSS)
• Weight: 0.31 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-348-B-I