OSG Spiral Point Tap, Series: 105, Measurement System: Imperial, Size #3, UNF, #3-56, 4.5P-5.5P Plug Chamfer, 2 Flutes, HSS, TiN Coated, Class of Fit: H3, Right Hand Cutting, 0.539 in Thread Length, 1.9 in Overall Length, 0.141 in Shank Dia, 1-5/16 in Shank Length, Aluminum, Aluminum Alloy, Cast Aluminum, Cast Iron and Low/Medium/High Carbon Steel Material Application, H2 Thread Limit, Through Coolant (Yes/No): No