Norseman Drill and Tool Type 25-AG Fractional Gold Oxide HSS Straight Flute Bottoming Hand Taps

Norseman Type 25-AG Bottoming Hand Taps – Gold Oxide Finish

Precision Tapping for Close-to-Bottom Threads

The Norseman Drill and Tool Type 25-AG Fractional Gold Oxide HSS Straight Flute Bottoming Hand Taps are engineered for precision threading near the bottom of blind holes. Designed with only 1–2 lead threads, these bottoming taps allow users to maximize thread depth in applications where full threads are required close to the base of a hole.

Engineered for Tight-Tolerance Applications

Bottoming Chamfer for Maximum Thread Reach

With a bottoming chamfer, these taps are ideal for creating threads near the bottom of blind holes without the risk of over-drilling. Their geometry provides smooth entry and exceptional control in finishing operations.

• Only 1–2 lead threads for close-to-bottom tapping

• Ideal for finishing blind holes after taper or plug tapping

• Reduces the need for secondary machining operations

Gold Oxide Coating for Enhanced Performance

Low-Temperature Stress Relief and Friction Reduction

The gold oxide coating provides a range of performance benefits. This low-temperature oxidation process relieves internal stresses in the HSS substrate, improving tap toughness. It also enhances lubricity, reducing friction and heat generation during cutting.

• Increases tool life by reducing wear

• Enhances chip flow and tap performance

• Ideal for materials like steel, aluminum, and brass

Fractional Sizing and American Craftsmanship

Built for Versatility in U.S. Manufacturing

Available in fractional sizes, these taps are compatible with standard inch-based threads commonly used in American manufacturing. Made in the USA, Norseman’s tools reflect premium quality and durability trusted by professionals.

For bottoming operations where precision matters, choose the Norseman Type 25-AG Gold Oxide Bottoming Hand Taps—where performance meets reliability.