High-Speed Nut Taps / H-SNT
For Stainless Steel
Unified coarse thread
TAP SIZE A B   C FLUTE
NO.6-32 UNC 62.0 24.0 30T 2.4 3
NO.8-32 UNC 65.0 24.0 30T 3.1 3
NO.10-24 UNC 65.0 32.0 30T 3.4 3
NO.12-24 69.8 32.0 30T 4.0 3
1/4-20 UNC 75.0 36.0 28T 4.6 3
5/16-18 UNC 80.0 41.0 28T 6.0 5
3/8-16 UNC 89.0 49.0 30T 7.3 5
7/16-14 UNC 102.0 58.0 30T 8.6 5
1/2-13 UNC 102.0 62.0 30T 10.0 5
9/16-12 UNC 114.0 67.0 30T 11.0 5
5/8-11 UNC 127.0 73.0 30T 12.8 5
3/4-10 UNC 133.0 80.0 30T 15.0 5
7/8-9 UNC 145.0 89.0 30T 17.0 5
1"-8 UNC 170.0 118.0 36T 20.0 5
M20 x 2.0 133.0 52.0 24T 16.5 5
M24 x 2.0 150.0 52.0 24T 20.0 5
Unified fine thread
TAP SIZE A B   C FLUTE
NO.10-32 UNC 67.0 24.0 30T 3.8 3
NO.12-28 UNC 69.8 28.0 30T 4.2 3
1/4-28 UNC 77.8 28.0 30T 4.8 3
5/16-24 UNF 80.0 35.0 30T 6.3 5
3/8-24 UNC 89.0 35.0 30T 8.0 5
7/16-20 UNC 102.0 42.0 30T 9.0 5
1/2-20 102.0 42.0 30T 10.0 5
9/16-18 UNC 114.0 46.0 30T 11.4 5
5/8-18 UNC 127.0 46.0 30T 13.1 5
3/4-16 UNC 133.0 51.0 30T 15.0 5
7/8-14 UNC 145.0 58.0 30T 18.5 5
1"-12 UNC 165.0 67.0 30T 21.0 5