Page 254 - Republic Drill

Pipe Taps

High Speed Steel – Ground Thread
Taper pipe taps are utilized to thread pipe fittings hence NPT
their nominal size is of the pipe being threaded. NPS INT/NPT
List No. 790U – Taper (NPT)
THREADING List No. 791U – Straight (NPS) Price Each Price Each
List No. 792U – Interrupted Thread Taper (INT/NPT)
For tapping tough, or gummy metals that have a tendency to
load the tap teeth.
NPS
NPS
NPT
Threads
NPT
Size
790U
Per Inch
792U
792U
791U
790U
1/16 Per Inch 25.68 791U INT/NPT 1 Size Threads 125.88 137.20 INT/NPT
27
27.80
39.86
194.48
11-1/2
1/8 27 SM/SK 25.68 27.80 –– 1-1/4 11-1/2 180.77 191.89 273.47
1/8 27 LG/SK 25.68 27.80 39.86 1-1/2 11-1/2 241.95 249.36 367.36
1/4 18 28.40 30.83 44.22 2 11-1/2 328.50 356.90 494.36
3/8 18 37.45 40.33 55.80 2-1/2 8 690.62 –– ––
1/2 14 59.33 64.41 88.99 3 8 973.35 –– ––
3/4 14 83.11 90.39 125.83
List No. 790 – Taper (NPT)
List No. 790T – TiN Coated Taper (NPT) List No. 790F – Dryseal Taper (NPTF)
List No. 791 – Straight (NPS) List No. 791F – Dryseal Straight (NPSF)
List No. 792 – Interrupted Thread (INT/NPT) List No. 792F – Dryseal Interrupted Thread Taper (INT/NPTF)
Price Each
Size Threads NPT TiN Coated NPT NPS INT/NPT NPTF NPSF INT/NPTF
Per Inch 790 790T 791 792 790F 791F 792F
1/16 27 19.58 26.22 21.02 29.37 20.86 22.41 31.31
1/8 27 SM/SK 19.58 28.55 21.02 –– –– –– ––
1/8 27 LG/SK 19.58 28.55 21.02 29.37 20.86 22.41 31.31
1/4 18 21.56 32.92 23.49 32.49 23.00 25.03 34.65
3/8 18 28.49 42.30 30.69 41.79 30.38 32.72 44.55
1/2 14 45.16 65.25 48.94 65.14 48.15 52.19 69.47
3/4 14 63.18 86.37 68.61 92.55 67.39 73.17 98.70
1 11-1/2 97.05 133.26 104.28 145.56 103.50 111.24 155.25
1-1/4 11-1/2 139.23 182.29 140.02 207.72 148.50 157.50 221.55
1-1/2 11-1/2 191.97 250.76 196.20 278.87 204.75 202.50 297.45
2 11-1/2 252.97 328.80 258.08 375.44 269.82 301.50 400.46
2-1/2 8 458.06 –– 670.50 538.20 625.50 718.20 ––
3 8 580.50 –– 945.00 –– 706.50 1008.00 ––
3-1/2 8 843.01 –– 999.00 –– 897.30 –– ––
4 8 1161.34 –– 1215.00 –– 1219.00 –– ––
Carbon Pipe Taps
Ground Thread
List No. 793U – Taper (NPT)
List No. 793UST – Surface Treated With Steam Oxide for reduced wear.
Price Each Price Each Price Each
Size Threads 793U 793UST Size Threads 793U 793UST Size Threads 793U 793UST
Per Inch
Per Inch
Per Inch
1/16 27 10.17 15.17 1/2 14 20.62 30.20 1-1/2 11-1/2 81.07 127.00
1/8 27 10.17 15.17 3/4 14 33.03 43.00 2 11-1/2 124.16 163.00
1/4 18 12.00 17.60 1 11-1/2 48.68 61.00
3/8 18 15.53 21.65 1-1/4 11-1/2 57.43 79.00
List No. 793 – Taper (NPT)
List No. 793L – Left Hand Taper (NPT)
List No. 793ST – Right Hand Straight (NPS)
Price Each Price Each
Threads NPT NPT LH Straight RH Threads NPT NPT LH Straight RH
Size Size
Per Inch 793 793L 793ST Per Inch 793 793L 793ST
1/16 27 7.86 10.88 –– 1-1/4 11-1/2 44.31 61.43 64.87
1/8 27 7.86 10.88 12.15 1-1/2 11-1/2 62.55 86.72 89.30
1/4 18 9.05 12.52 13.39 2 11-1/2 95.79 133.20 138.38
3/8 18 11.99 16.61 18.45 2-1/2 8 179.10 231.75 ––
1/2 14 15.93 22.05 24.44 3 8 242.10 357.30 ––
3/4 14 25.49 35.33 39.06 3-1/2 8 422.10 — ––
1 11-1/2 37.55 52.07 55.05 4 8 562.50 — ––
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