Osg 4100001711 Thread Mill 1/2-20 Unf 4 Flute Solid Carbide

Product Description

The OSG 4100001711 is a helical flute thread mill designed for cutting 1/2-20 UNF internal threads in a CNC machining environment. Built from solid carbide and finished with OSG EXO coating, this tool delivers hardness and heat resistance well suited for production threading in ferrous and non-ferrous materials. The four right-hand flutes provide smooth chip evacuation and stable cutting action. With a 0.3700-inch cutting diameter and a 3/4-inch length of cut, this mill handles standard thread depths efficiently. A 3/8-inch shank diameter keeps the tool compatible with common ER collet and side-lock holders found in most machining centers.

This thread mill is intended for use in CNC machining centers by machinists and tool and die professionals producing UNF threads in precision components. The helical flute geometry suits both through-hole and blind-hole thread applications where tap breakage risk must be minimized. At 3 inches overall length, the tool provides adequate reach for typical workpiece setups without excessive overhang. It is sold individually and belongs to OSG Series 41000.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding thread milling operations
• EXO coating reduces friction and extends tool life in hardened and abrasive materials
• Four right-hand helical flutes promote efficient chip flow and surface finish quality
• 0.3700-inch cutting diameter matched to 1/2-20 UNF thread form at 20 TPI
• 3/8-inch shank diameter fits standard ER collet holders and side-lock tooling
• No coolant-through design simplifies setup; external coolant or air blast is recommended

Compatibility

Designed for CNC machining centers capable of helical interpolation; fits 3/8-inch ER collet or side-lock tool holders. Intended for producing 1/2-20 UNF threads per the Thread Standard specified in OSG Series 41000.

Installation Notes

Thread milling requires a CNC control capable of helical interpolation — verify program compatibility before use. Secure the shank fully in a balanced tool holder and confirm runout before cutting. Follow the machine tool manufacturer and OSG recommended feeds and speeds for the specific workpiece material. No coolant-through path is present on this tool; apply external flood coolant or air blast to manage chip evacuation and heat.