Page 235 - Republic Drill

Coated Spiral Pointed Taps

High Speed Steel
List No. 780ST – Surface Treated
Steam Oxide Coating produces a thin iron oxide surface which reduces
friction between the tool and the chips, acting as a solid lubricant.
List No. 780T – TiN Coated
Provides thin coating for wear and lubricity.
Also increases tool life and productivity. THREADING
Price Each Price Each
Steam Steam
Threads Thread No. of TiN Coated Threads Thread No. of TiN Coated
Size Oxide Size Oxide
Per Inch Limits Flutes 780T Per Inch Limits Flutes 780T
780ST 780ST
0 80 H1 2 14.20 18.00 1/4 28 H3 2 6.10 10.98
1 64 H1 2 14.20 18.00 5/16 18 H3 2 8.25 10.36
1 72 H2 2 14.20 18.00 5/16 24 H3 2 8.25 10.36
2 56 H2 2 11.20 15.00 3/8 16 H3 3 8.82 13.24
2 64 H2 2 14.40 15.72 3/8 24 H3 3 8.82 21.16
3 48 H2 2 9.21 11.50 7/16 14 H3 3 13.50 21.16
3 56 H2 2 9.21 11.50 7/16 20 H3 3 13.50 21.20
4 36 H2 2 9.45 11.43 1/2 13 H3 3 14.50 21.20
4 40 H2 2 7.30 11.43 1/2 20 H3 3 14.50 21.20
4 48 H2 2 8.25 11.43 9/16 12 H3 3 26.80 31.72
5 40 H2 2 7.50 11.43 9/16 18 H3 3 26.80 31.72
5 44 H2 2 8.50 11.43 5/8 11 H3 3 29.00 41.00
6 32 H3 2 6.20 9.63 5/8 18 H3 3 29.00 41.00
6 40 H2 2 6.83 9.63 3/4 10 H3 3 40.59 55.00
8 32 H3 2 6.20 9.63 3/4 16 H3 3 40.59 55.00
8 36 H2 2 6.83 9.63 7/8 9 H4 3 68.00 88.20
10 24 H3 2 6.20 9.63 7/8 14 H4 3 68.00 88.20
10 32 H3 2 6.20 9.63 1" 8 H4 3 91.00 123.30
12 24 H3 2 6.83 10.98 1" 12 H4 3 91.00 123.30
12 28 H3 2 6.83 10.98 1" 14 H4 3 91.00 123.30
1/4 20 H3 2 6.10 10.98

Metric Spiral Pointed Taps

High Speed Steel – Ground Thread
List No. 774M – Plug Chamfer
Size Pitch No. of Hand Tap Size Pitch No. of Hand Tap Size Pitch No. of Hand Tap
mm mm Flutes 774M mm mm Flutes 774M mm mm Flutes 774M
1.40 .30 2 19.34 5.00 .90 2 8.81 12.00 .80 3 20.70
1.50 .30 2 19.34 5.00 1.00 2 8.81 12.00 1.00 3 20.70
1.50 .35 2 24.03 5.50 .90 2 8.81 12.00 1.25 3 20.70
1.60 .35 2 19.34 6.00 .50 2 10.23 12.00 1.50 3 20.70
1.70 .20 2 19.34 6.00 .75 2 8.81 12.00 1.75 3 20.70
1.70 .35 2 19.34 6.00 .80 2 8.81 13.00 .50 3 25.88
1.80 .35 2 19.34 6.00 1.00 2 8.81 13.00 1.00 3 25.88
2.00 .25 2 17.82 6.30 1.00 2 8.81 13.00 1.25 3 25.88
2.00 .40 2 17.82 7.00 .50 2 10.23 13.00 1.50 3 25.88
2.00 .45 2 17.82 7.00 .75 2 10.23 13.00 2.00 3 25.88
2.20 .45 2 14.22 7.00 1.00 2 10.23 14.00 .50 3 31.37
2.30 .40 2 14.22 8.00 .50 2 10.23 14.00 .75 3 31.37
2.50 .45 2 14.22 8.00 .75 2 10.23 14.00 1.25 3 31.37
2.50 .50 2 13.75 8.00 1.00 2 10.23 14.00 1.50 3 31.37
2.60 .35 2 13.75 8.00 1.25 2 10.23 14.00 2.00 3 31.37
2.60 .45 2 14.22 8.00 1.50 2 10.23 16.00 1.00 3 36.57
2.80 .45 2 14.22 9.00 .50 2 10.23 16.00 1.50 3 36.57
3.00 .35 2 10.23 9.00 1.00 2 10.23 16.00 2.00 3 36.57
3.00 .50 2 10.23 9.00 1.25 2 10.23 18.00 1.00 3 45.78
3.00 .60 2 10.23 10.00 .50 3 16.90 18.00 1.50 3 45.78
3.50 .50 2 8.81 10.00 .75 3 16.90 18.00 2.00 3 45.78
3.50 .60 2 8.81 10.00 1.00 3 16.90 18.00 2.50 3 45.78
4.00 .35 2 10.23 10.00 1.25 3 16.90 20.00 1.00 3 66.48
4.00 .50 2 8.81 10.00 1.50 3 16.90 20.00 1.50 3 66.48
4.00 .70 2 8.81 11.00 .50 3 16.90 20.00 2.00 3 66.48
4.50 .50 2 10.23 11.00 .75 3 16.90 20.00 2.50 3 66.48
4.50 .75 2 8.81 11.00 1.00 3 16.90 22.00 1.50 3 88.16
5.00 .50 2 8.81 11.00 1.50 3 16.90 22.00 2.50 3 88.16
5.00 .75 2 8.81 12.00 .50 3 20.70 24.00 2.00 3 106.69
5.00 .80 2 8.81 12.00 .75 3 20.70 24.00 3.00 3 106.69
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