Helicoid Flighting & Screws

Helicoid flighting is cold rolled from special steel into a continuous helix that produces a work-hardened, smoothly finished flighting surface. Helicoid screws are manufactured by mounting helicoid flighting on a center pipe and fastening by intermittent welds.

Helicoid Flighting & Screws
Dimensional Drawing for Helicoid Flighting & Screws
  • Model Number
  • A - Screw Dia.
  • B - Pitch
  • Pipe Sch 40 - Size
  • C - Pipe Sch 40 - Pipe OD
  • Screw Coupling Dia
  • L - Std. Length
  • 3D Cad

    • 12H408R
    • A - Screw Diameter: 12"
    • B - Pitch: 12"
    • Pipe Sch 40 - Size: 2 1/2"
    • Pipe Sch 40 - C- Pipe OD: 2 7/8"
    • Screw Coupling Dia: 2"
    • L - Std. Length: 11’-10"

    • 12H412R
    • A - Screw Diameter: 12"
    • B - Pitch: 12"
    • Pipe Sch 40 - Size: 2 1/2"
    • Pipe Sch 40 - C- Pipe OD: 2 7/8"
    • Screw Coupling Dia: 2"
    • L - Std. Length: 11’-10"

    • 12H508R
    • A - Screw Diameter: 12"
    • B - Pitch: 12"
    • Pipe Sch 40 - Size: 3"
    • Pipe Sch 40 - C- Pipe OD: 3 1/2"
    • Screw Coupling Dia: 2 7/16"
    • L - Std. Length: 11’-9"

    • 12H512R
    • A - Screw Diameter: 12"
    • B - Pitch: 12"
    • Pipe Sch 40 - Size: 3"
    • Pipe Sch 40 - C- Pipe OD: 3 1/2"
    • Screw Coupling Dia: 2 7/16"
    • L - Std. Length: 11’-9"

    • 12H614R
    • A - Screw Diameter: 12"
    • B - Pitch: 12"
    • Pipe Sch 40 - Size: 3 1/2"
    • Pipe Sch 40 - C- Pipe OD: 4"
    • Screw Coupling Dia: 3"
    • L - Std. Length: 11’-9"

    • 12HF408R
    • A - Screw Diameter: 12"
    • B - Pitch: 12"
    • Pipe Sch 40 - Size: 2 1/2"
    • Pipe Sch 40 - C- Pipe OD: 2 7/8"
    • Screw Coupling Dia: 2"
    • L - Std. Length: 11’-10"

    • 12HF412R
    • A - Screw Diameter: 12"
    • B - Pitch: 12"
    • Pipe Sch 40 - Size: 2 1/2"
    • Pipe Sch 40 - C- Pipe OD: 2 7/8"
    • Screw Coupling Dia: 2"
    • L - Std. Length: 11’-10"

    • 12HF508R
    • A - Screw Diameter: 12"
    • B - Pitch: 12"
    • Pipe Sch 40 - Size: 3"
    • Pipe Sch 40 - C- Pipe OD: 3 1/2"
    • Screw Coupling Dia: 2 7/16"
    • L - Std. Length: 11’-9"

    • 12HF512R
    • A - Screw Diameter: 12"
    • B - Pitch: 12"
    • Pipe Sch 40 - Size: 3"
    • Pipe Sch 40 - C- Pipe OD: 3 1/2"
    • Screw Coupling Dia: 2 7/16"
    • L - Std. Length: 11’-9"

    • 12HF614R
    • A - Screw Diameter: 12"
    • B - Pitch: 12"
    • Pipe Sch 40 - Size: 3 1/2"
    • Pipe Sch 40 - C- Pipe OD: 4"
    • Screw Coupling Dia: 3"
    • L - Std. Length: 11’-9"

    • 14H508R
    • A - Screw Diameter: 14"
    • B - Pitch: 14"
    • Pipe Sch 40 - Size: 3"
    • Pipe Sch 40 - C- Pipe OD: 3 1/2"
    • Screw Coupling Dia: 2 7/16"
    • L - Std. Length: 11’-9"

    • 14H614R
    • A - Screw Diameter: 14"
    • B - Pitch: 14"
    • Pipe Sch 40 - Size: 3 1/2"
    • Pipe Sch 40 - C- Pipe OD: 4"
    • Screw Coupling Dia: 3"
    • L - Std. Length: 11’-9"

    • 14HF508R
    • A - Screw Diameter: 14"
    • B - Pitch: 14"
    • Pipe Sch 40 - Size: 3"
    • Pipe Sch 40 - C- Pipe OD: 3 1/2"
    • Screw Coupling Dia: 2 7/16"
    • L - Std. Length: 11’-9"

    • 14HF614R
    • A - Screw Diameter: 14"
    • B - Pitch: 14"
    • Pipe Sch 40 - Size: 3 1/2"
    • Pipe Sch 40 - C- Pipe OD: 4"
    • Screw Coupling Dia: 3"
    • L - Std. Length: 11’-9"

    • 16H610R
    • A - Screw Diameter: 16"
    • B - Pitch: 16"
    • Pipe Sch 40 - Size: 3 1/2"
    • Pipe Sch 40 - C- Pipe OD: 4"
    • Screw Coupling Dia: 3"
    • L - Std. Length: 11’-9"

    • 16H614R
    • A - Screw Diameter: 16"
    • B - Pitch: 16"
    • Pipe Sch 40 - Size: 4"
    • Pipe Sch 40 - C- Pipe OD: 4 1/2"
    • Screw Coupling Dia: 3"
    • L - Std. Length: 11’-9"

    • 16HF610R
    • A - Screw Diameter: 16"
    • B - Pitch: 16"
    • Pipe Sch 40 - Size: 3 1/2"
    • Pipe Sch 40 - C- Pipe OD: 4"
    • Screw Coupling Dia: 3"
    • L - Std. Length: 11’-9"

    • 16HF614R
    • A - Screw Diameter: 16"
    • B - Pitch: 16"
    • Pipe Sch 40 - Size: 4"
    • Pipe Sch 40 - C- Pipe OD: 4 1/2"
    • Screw Coupling Dia: 3"
    • L - Std. Length: 11’-9"

    • 4H206R
    • A - Screw Diameter: 4"
    • B - Pitch: 4"
    • Pipe Sch 40 - Size: 1 1/4"
    • Pipe Sch 40 - C- Pipe OD: 1 21/32"
    • Screw Coupling Dia: 1"
    • L - Std. Length: 9’-10 ½"

    • 4HF206R
    • A - Screw Diameter: 4"
    • B - Pitch: 4"
    • Pipe Sch 40 - Size: 1 1/4"
    • Pipe Sch 40 - C- Pipe OD: 1 21/32"
    • Screw Coupling Dia: 1"
    • L - Std. Length: 9’-10 ½"

    • 6H304R
    • A - Screw Diameter: 6"
    • B - Pitch: 6"
    • Pipe Sch 40 - Size: 2"
    • Pipe Sch 40 - C- Pipe OD: 2 3/8"
    • Screw Coupling Dia: 1 1/2"
    • L - Std. Length: 9’-10"

    • 6H308R
    • A - Screw Diameter: 6"
    • B - Pitch: 6"
    • Pipe Sch 40 - Size: 2"
    • Pipe Sch 40 - C- Pipe OD: 2 3/8"
    • Screw Coupling Dia: 1 1/2"
    • L - Std. Length: 9’-10"

    • 6H312R
    • A - Screw Diameter: 6"
    • B - Pitch: 6"
    • Pipe Sch 40 - Size: 2"
    • Pipe Sch 40 - C- Pipe OD: 2 3/8"
    • Screw Coupling Dia: 1 1/2"
    • L - Std. Length: 9’-10"

    • 6HF304R
    • A - Screw Diameter: 6"
    • B - Pitch: 6"
    • Pipe Sch 40 - Size: 2"
    • Pipe Sch 40 - C- Pipe OD: 2 3/8"
    • Screw Coupling Dia: 1 1/2"
    • L - Std. Length: 9’-10"

    • 6HF308R
    • A - Screw Diameter: 6"
    • B - Pitch: 6"
    • Pipe Sch 40 - Size: 2"
    • Pipe Sch 40 - C- Pipe OD: 2 3/8"
    • Screw Coupling Dia: 1 1/2"
    • L - Std. Length: 9’-10"

    • 6HF312R
    • A - Screw Diameter: 6"
    • B - Pitch: 6"
    • Pipe Sch 40 - Size: 2"
    • Pipe Sch 40 - C- Pipe OD: 2 3/8"
    • Screw Coupling Dia: 1 1/2"
    • L - Std. Length: 9’-10"

    • 9H306R
    • A - Screw Diameter: 9"
    • B - Pitch: 9"
    • Pipe Sch 40 - Size: 2"
    • Pipe Sch 40 - C- Pipe OD: 2 3/8"
    • Screw Coupling Dia: 1 1/2"
    • L - Std. Length: 9’-10"

    • 9H312R
    • A - Screw Diameter: 9"
    • B - Pitch: 9"
    • Pipe Sch 40 - Size: 2"
    • Pipe Sch 40 - C- Pipe OD: 2 3/8"
    • Screw Coupling Dia: 1 1/2"
    • L - Std. Length: 9’-10"

    • 9H406R
    • A - Screw Diameter: 9"
    • B - Pitch: 9"
    • Pipe Sch 40 - Size: 2 1/2"
    • Pipe Sch 40 - C- Pipe OD: 2 7/8"
    • Screw Coupling Dia: 2"
    • L - Std. Length: 9’-10"

    • 9H412R
    • A - Screw Diameter: 9"
    • B - Pitch: 9"
    • Pipe Sch 40 - Size: 2 1/2"
    • Pipe Sch 40 - C- Pipe OD: 2 7/8"
    • Screw Coupling Dia: 2"
    • L - Std. Length: 9’-10"

    • 9H414R
    • A - Screw Diameter: 9"
    • B - Pitch: 9"
    • Pipe Sch 40 - Size: 2 1/2"
    • Pipe Sch 40 - C- Pipe OD: 2 7/8"
    • Screw Coupling Dia: 2"
    • L - Std. Length: 9’-10"

    • 9HF306R
    • A - Screw Diameter: 9"
    • B - Pitch: 9"
    • Pipe Sch 40 - Size: 2"
    • Pipe Sch 40 - C- Pipe OD: 2 3/8"
    • Screw Coupling Dia: 1 1/2"
    • L - Std. Length: 9’-10"

    • 9HF312R
    • A - Screw Diameter: 9"
    • B - Pitch: 9"
    • Pipe Sch 40 - Size: 2"
    • Pipe Sch 40 - C- Pipe OD: 2 3/8"
    • Screw Coupling Dia: 1 1/2"
    • L - Std. Length: 9’-10"

    • 9HF406R
    • A - Screw Diameter: 9"
    • B - Pitch: 9"
    • Pipe Sch 40 - Size: 2 1/2"
    • Pipe Sch 40 - C- Pipe OD: 2 7/8"
    • Screw Coupling Dia: 2"
    • L - Std. Length: 9’-10"

    • 9HF412R
    • A - Screw Diameter: 9"
    • B - Pitch: 9"
    • Pipe Sch 40 - Size: 2 1/2"
    • Pipe Sch 40 - C- Pipe OD: 2 7/8"
    • Screw Coupling Dia: 2"
    • L - Std. Length: 9’-10"

    • 9HF414R
    • A - Screw Diameter: 9"
    • B - Pitch: 9"
    • Pipe Sch 40 - Size: 2 1/2"
    • Pipe Sch 40 - C- Pipe OD: 2 7/8"
    • Screw Coupling Dia: 2"
    • L - Std. Length: 9’-10"