Seco JS564120D3C.3Z4C-NXT 12mm 4-Flute Solid Carbide End Mill

The Seco JS564120D3C.3Z4C-NXT is a new, solid carbide 4-flute square end mill from Seco's Jabro-Solid² JS564 series, manufactured in the Netherlands (as confirmed on the label). The designation decodes as follows: JS564 = Jabro-Solid² series 564 for steel and stainless steel milling; 120 = 12 mm cutting diameter; D3C.3 = 3×D flute length with corner radius of 0.3 mm; Z4C = 4 flutes with unequal helix/pitch (variable pitch for chatter suppression); NXT = Seco's proprietary NXT coating, a next-generation PVD multi-layer coating optimized for hardened steels, stainless steels, and high-temperature alloys, offering improved heat and wear resistance over standard TiAlN. The tool features a 12 mm cylindrical shank (D12) for use in standard ER collet chucks, hydraulic chucks, or shrink-fit toolholders, with an overall length (OAL) of 99 mm and a flute length of 45 mm as encoded in the ø12×45×99 D12 designation on the label. The variable pitch construction reduces harmonic vibration during high-speed machining, making this end mill well-suited for finishing and semi-finishing operations in ISO P (steel), ISO M (stainless), and ISO S (titanium/superalloy) materials.

Product Specifications