Eagle Cutting Tool HT-836-B-D Hss Bottom Tap 8-36

Product Description

The EAGLE CUTTING TOOL HT-836-B-D is a high-speed steel (HSS) bottom tap designed to cut internal threads in pre-drilled holes. A bottom tap is ground with minimal lead chamfer, allowing threads to be cut to the very bottom of a blind hole. This tool is sized for 8-36 unified fine thread (UNF) applications and is manufactured in the USA. Machinists, maintenance technicians, and tradespeople rely on bottom taps like this one when a thread must extend fully to the base of a shallow or closely toleranced blind bore.

The HT-836-B-D is suited for tapping soft to medium-hardness materials including steel, aluminum, brass, and thermoplastics where a full-depth blind-hole thread is required. It is commonly used in HVAC equipment assembly and service, electrical panel fabrication, plumbing fixture work, and general mechanical maintenance. The 8-36 UNF thread designation is standard in precision fastener applications where fine thread engagement and vibration resistance are priorities.

Key Features

• Bottom tap geometry threads blind holes to near full depth
• High-speed steel construction provides hardness and wear resistance
• 8-36 UNF thread form for fine-pitch precision fastener applications
• USA manufactured
• Straight flute design compatible with standard tap wrenches and drill press tap holders

Compatibility

Designed for use in any application requiring an 8-36 UNF internal thread, particularly in blind holes where a plug or taper tap cannot complete the thread run-out.

Installation Notes

Use the correct 8-36 UNF tap drill size to prepare the hole before tapping. Apply cutting fluid appropriate for the workpiece material to extend tool life and improve thread quality. Advance the tap with steady, even pressure and back off periodically to break chips and prevent binding. Secure the workpiece firmly before tapping and ensure the tap is started square to the hole to avoid tap breakage.

Technical Specifications

• Thread Size: 8-36
• Thread Form: Unified Fine (UNF)
• Tap Type: Bottom
• Material: High-Speed Steel (HSS)
• Country of Origin: USA
• Weight: 0.08 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: HT-836-B-D