Drillco 2-7/8-8 HSS Bottoming Tap (25A356B)

Description

Drillco 25A356B 2-7/8-8 HSS Bottoming Tap is engineered for heavy-duty threading applications in oil field, gas exploration, and power generation industries. This 8-pitch bottoming tap is designed for large diameters up to 4″ and features a bottoming geometry for threading to the bottom of blind holes. Made from premium grade high-speed steel (HSS) with a black oxide surface treatment, it offers extended tool life and enhanced wear resistance. The spiral point design facilitates efficient chip evacuation by ejecting chips through the bottom of the hole. Additionally, a reduced neck provides better clearance when tapping deep holes. The tap includes a standard square shank for compatibility with tap wrenches and powered machines. Proudly made in the USA for reliable performance and quality.

Features:

• Suitable for large diameter threads up to 4″
• Ideal for oil field, gas exploration, and power generation applications
• Bottoming geometry allows threading to the bottom of blind holes
• Made from premium grade HSS for long-lasting durability
• Black oxide surface treatment for extended tool life
• Spiral point to eject chips through the bottom of the hole
• Reduced neck design for better clearance in deep hole tapping
• Standard square shank compatible with tap wrenches or powered machines

Benefits:

• Enables precise bottom threading in blind holes
• Improves chip evacuation and reduces clogging
• Extends tool life through premium materials and coatings
• Allows easier access in deep hole tapping with reduced neck
• Ensures consistent threading performance in demanding conditions

Technical Specifications:

• Model: 25A356B
• Type: HSS Bottoming Tap
• Size: 2-7/8″-8
• Series: 2500
• Material: Premium Grade High-Speed Steel (HSS)
• Geometry: Bottoming
• Coating/Finish: Black Oxide Surface Treatment
• Chip Evacuation: Spiral Point
• Special Feature: Reduced Neck for Deep Hole Clearance
• Shank: Standard Square
• Country of Origin: USA