Flute Type: Straight. Hand of Cut: Right. Material: HSS. Number of Flutes: 2, Shank Configuration: Straight with Square. Surface Condition: TiN, Tap Blank Construction: USCTI Table 302A, Tap Chamfer: Plug, Tap Construction: Standard, Tap Ground Threads: Yes, Tap Interrupted Thread: No, Tap Limit: H5, Tap Style: Spiral Point Tap, Tap Truncated Threads: No, Tap Type: Machine Tap. Tool Size: 1/4 - 20 UNC. Diameter: 0.2500-Inch. Overall Length: 2.5000-Inch, Overall Length (Metric): 63.50mm, Shank Size: 0.2550-Inch, Shank Size (Metric): 6.48mm, Shank Square Length: 0.3125-Inch, Shank Square Length (Metric): 7.94mm, Shank Square Size: 0.1910-Inch, Shank Square Size (Metric): 4.85mm. Depth of Cut: 2xD. Material Application:- M: Stainless Steel, P: Steel. Operation Type: Thru Hole, Tap Spiral Point: Yes. Thread Creation: Thread Cutting.