Helical Rods
For stock-form planning, compare round, rectangular, and custom options in our tungsten carbide stock forms guide. To estimate round rod weight from diameter and length, use the carbide rod weight calculation guide.
Confirm the angle, grade, and finishing path together
RX stock requests are clearer when the angle, diameter, grade, length, quantity, and finished use are known. If the rod will be ground or modified after ordering, note the finished dimensions and any critical tolerances.
For parts that move beyond stock selection, the carbide machining page is a better place to frame the full print review.
*All lengths are standardized
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15°
Diameter Bolt Circle Hole Size Pitch Helical Rods in mm in mm in mm in. mm RX 15-25-07/15° 0.248 6.3 0.098 2.5 0.027 0.70 2.77 70.35 RX 20-35-13/15° 0.327 8.3 0.138 3.5 0.051 1.30 3.69 93.8 RX 25-50-15/15° 0.406 10.3 0.196 5.0 0.059 1.50 4.61 117.25 RX 30-62-16/15° 0.484 12.3 0.244 6.2 0.062 1.60 5.53 140.7 RX 35-70-20/15° 0.563 14.3 0.276 7.0 0.079 2.00 6.46 164.14 RX 40-80-20/15° 0.642 16.3 0.315 8.0 0.079 2.00 7.38 187.59 RX 45-90-2.2/15° 0.72 18.3 0.354 9.0 0.087 2.20 8.3 211.04 RX 50-100-25/15° 0.799 20.3 0.393 10 0.098 2.50 9.23 234.49 -
30°
Diameter Bolt Circle Hole Size Pitch Helical Rods in mm in mm in mm in. mm RX 08-03-015/30° 0.13 3.30 0.012 0.03 0.006 0.15 0.643 16.32 RX 08-15-040/30° 0.13 3.30 0.059 1.50 0.016 0.40 0.643 16.32 RX 10-21-050/30° 0.169 4.30 0.083 2.10 0.020 0.50 0.857 21.77 RX 12.5-26-070/30° 0.209 5.30 0.102 2.60 0.028 0.70 1.071 27.21 RX 15-19-060/30° 0.248 6.30 0.075 1.90 0.024 0.60 1.285 32.65 RX 15-22-080/30° 0.248 6.30 0.087 2.20 0.031 0.80 1.285 32.65 RX 15-26-.070/30° 0.248 6.30 0.120 2.60 0.028 0.70 1.285 32.65 RX 16-35-10/30° 0.268 6.80 0.138 3.50 0.039 1.00 1.393 35.37 RX 18-35-10/30° 0.287 7.30 0.138 3.50 0.039 1.00 1.500 38.09 RX 20-40-10/30° 0.327 8.30 0.157 4.00 0.039 1.00 1.714 43.53 RX 25-48-14/30° 0.406 10.30 0.189 4.80 0.055 1.40 2.142 54.41 RX 30-54-15/30° 0.484 12.30 0.213 5.40 0.059 1.50 2.571 65.30 RX 30-59-17/30° 0.484 12.30 0.232 5.90 0.067 1.70 2.571 65.30 RX 32-65-175/30° 0.524 13.30 0.256 6.50 0.069 1.75 2.785 70.74 RX 35-71-175/30° 0.563 14.30 0.280 7.10 0.069 1.75 2.999 76.18 RX 35-71-20/30° 0.563 14.30 0.280 7.10 0.079 2.00 2.999 76.18 RX 38-77-175/30° 0.591 15.30 0.303 7.70 0.069 1.75 3.213 81.62 RX 40-83-175/30° 0.642 16.30 0.327 8.30 0.069 1.75 3.428 87.06 RX 40-86-25/30° 0.642 16.30 0.339 8.60 0.098 2.50 3.428 87.06 RX 45-95-20/30° 0.72 18.30 0.374 9.50 0.079 2.00 3.856 97.95 RX 45-97-28/30° 0.72 18.30 0.382 9.70 0.110 2.80 3.856 97.95 RX 48-101-25/30° 0.76 19.30 0.398 10.10 0.098 2.50 4.070 103.39 RX 50-104/28/30° 0.799 20.30 0.409 10.40 0.110 2.80 4.285 108.83 RX 50-107-32/30° 0.799 20.30 0.421 10.70 0.126 3.20 4.285 108.83 -
40°
Diameter Bolt Circle Hole Size Pitch Helical Rods in mm in mm in mm in. mm RX 15-16-05/40° 0.248 6.3 0.063 1.60 0.020 0.5 0.709 18.00 RX 15-20-05/40° 0.248 6.3 0.079 2.00 0.020 0.5 0.884 22.46 RX 15-21-06/40° 0.248 6.3 0.083 2.10 0.024 0.6 0.884 22.46 RX 16-22-05/40° 0.268 6.8 0.087 2.20 0.020 0.5 0.963 24.34 RX 18-24-065/40° 0.287 7.3 0.094 2.40 0.026 0.65 1.039 26.21 RX 20-27-065/40° 0.327 8.3 0.106 2.70 0.026 0.65 1.179 29.95 RX 20-35-09/40° 0.327 8.3 0.138 3.50 0.035 0.9 1.378 35.00 RX 23-32-075/40° 0.366 9.3 0.126 3.20 0.030 0.75 1.327 33.70 RX 25-27-08/40° 0.406 10.3 0.106 2.70 0.031 0.8 1.474 37.44 RX 25-35-080/40° 0.406 10.3 0.138 3.50 0.031 0.8 1.474 37.44 RX 25-45-11/40° 0.406 10.3 0.177 4.50 0.043 1.1 1.811 46.00 RX 30-42-09/40° 0.484 12.3 0.165 4.20 0.035 0.9 1.769 44.93 RX 30-57-14/40° 0.484 12.3 0.224 5.70 0.055 1.4 2.244 57.00 RX 32-44-09/40° 0.524 13.3 0.173 4.40 0.035 0.9 1.916 48.67 RX 35-47-10/40° 0.563 14.3 0.185 4.70 0.039 1 2.064 52.42 RX 38-51-11/40° 0.591 15.3 0.201 5.10 0.043 1.1 2.211 56.16 RX 40-55-12/40° 0.642 16.3 0.217 5.50 0.047 1.2 2.358 59.90 RX 45-63-15/40° 0.72 18.3 0.248 6.30 0.059 1.5 2.653 67.39 RX 50-71-15/40° 0.799 20.3 0.280 7.10 0.059 1.5 2.948 74.88