Hand Tap, Thread Direction Right Hand, Tap Style Bottoming, Size 1/4", Pitch 28, Material High Speed Steel, Finish Bright, Overall Length 2-1/2", Thread Length 1", Shank Dia. 0.255", Number of Flutes 4, Thread Type UNF, Pitch Diameter Limits H3, List Number 1003, Standards USCTI 302Features:Material -High Speed SteelFinish -BrightOverall Length -2-1/2"Thread Length -1"Shank Dia. -0.255"Number of Flutes -4Thread Type -UNFPitch Diameter Limits -H3List Number -1003Standards -USCTI 302WARNING:California Residents:This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. California proposition 65 warning