Zelx SS 1-1/8-7 Spiral Point H6 Modified Bottom Tap Manufacture: YMW Mfg Part Number: 384701 Size: (Inch) Thread Limit: H6 Number of Flutes: 4 Flute Style: Spiral Chamfered: Mod Bottom Thread Lead: 2-1/2 to 3-1/2 Finish/Coating: Black Oxide Tap Material: Vanadium High Speed Steel Oversize: (Yes/No) No Length of Thread: 1.181 Overall Length: (Inch) 5-7/16 Thread Standard: UNC Tapping Materials: Stainless Steel, Alloy Steels and Ductile Iron Tapping Stainless Steel: 12-70 SFM Tapping Alloy Steels: 10-45 SFM, Tapping Ductile Iron: 15-60 SFM