Sgs 31621 Square End Mill 0.5 in 4 Flute Solid Carbide

Product Description

The SGS 31621 is a solid carbide square end mill designed for precision material removal in professional machining applications. Built to Series 16 specifications, this single-end tool features a 0.5-inch mill diameter, a 0.625-inch length of cut, and a 2.5-inch overall length. The micrograin carbide construction provides the hardness and edge retention required for demanding cutting operations. With four flutes and a 30-degree helix angle, it delivers efficient chip evacuation and a consistent finish across a wide range of workpiece materials. The variable index geometry further reduces harmonic chatter during cuts.

This stub-length end mill is suited for CNC machining centers and manual mills in job shop, production, and tool-and-die environments. Its centercutting capability allows plunge entry into the workpiece without a pre-drilled pilot hole. The right-hand cutting and right-hand flute spiral make it compatible with standard spindle configurations. It is applicable across a broad material range, including cast iron, non-ferrous metals, mild steel, stainless steel, heat-resistant alloys, and titanium, as indicated by workpiece material codes H, K, M, N, P, and S.

Key Features

• Micrograin solid carbide construction for superior hardness and wear resistance
• 30-degree helix angle promotes smooth chip flow and reduced cutting forces
• Variable index flute spacing minimizes chatter and vibration during high-feed operations
• Centercutting design enables direct plunge milling without a pilot hole
• Bright/uncoated finish suitable for use as-ground or as a base for shop-applied coatings
• Stub length provides added rigidity for shallow-depth-of-cut applications

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide end mill compatible with standard 0.5-inch straight-cylindrical shank tool holders and collets used in CNC and manual milling machines. Compatible workpiece materials include cast iron, non-ferrous metals, mild steel, stainless steel, heat-resistant superalloys, and titanium.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the machine spindle fully stopped and locked out per facility safety procedures. Ensure the collet or end mill holder is clean and free of chips or debris before seating the 0.5-inch straight-cylindrical shank. Verify runout with a dial indicator after tool installation to confirm proper seating. Follow the tool manufacturer's recommended speeds and feeds for the specific workpiece material to maximize tool life.