GREENFIELD THREADING, Spiral Point Tap, Thread Size 3/8

UN fine (UNF) taps have more threads per inch than UN coarse (UNC) taps. – Compared to UNC taps, UNF taps perform better in threading applications on thin-walled workpieces and hard materials. – Fine threads provide more tensile strength and shear strength than coarse threads. – The bright finish on these taps provides a smooth, polished surface.

Thread Size / 3/8″-24
Thread Standard / UNF
Tap Material / High Speed Steel
Tap Finish / Bright (Uncoated)
Thread Length / 3/4 in
Overall Length / 2 15/16 in
75% Thread Drill Size / 8.50 mm
Thread Limit / H1
Class of Fit / 2B
Thread Direction / Right Hand
Number of Flutes / 3
Primary Material Application / All Materials
55% Thread Drill Size / 11/32 in
65% Thread Drill Size / R
Drill Bit Size / Q
Extended Neck / Yes
Measurement System / Fractional Inch
Primary Material Application ISO Code / N, P
Series / SPGP
Shank Dia. / 3/16 in
Shank Length / 1 11/16 in
Shank Type – Machining / Straight
Spiral Direction / Neutral
Square Size / 0.2860 in
Standards / USCTI Table 302A
Tap Chamfer / Plug
Tap Grouping / Individual
Tap Thread Size / 3/8″-24
Threads per Inch / 24
Thread Limit / Class of Fit / H1 / 2B