[Features] ● Tap tool manufactured for stainless steel. ● A product that achieves long life and high machinability with VS coating. ● Compliant with ISO3161 standards except for no roundness at the bottom, making it ideal for the aviation industry.
[Use] ● For drilling blind holes. ●Cover materials: stainless steel, nickel alloy, pure copper.
[Specifications] ● Accuracy: 3B ● Nominal dimension: 1/4 ● Number of threads: 28 ● Screw length (mm): 11 ● Total length (mm): 80 ● Shank diameter (mm): 6 ● Shank square part (mm) : 4.9 ● Pilot hole diameter (mm): 5.55 ● Pitch (mm): 0.907 ● Number of chamfered threads: 2.5 ● Machined screw: Unified screw
