Screw Flights

Start with the finished flight, not a product name

The useful choice is rarely between two catalogue labels. Outside diameter, inside diameter, pitch, plate or strip thickness, material grade, hand, finished length and the way the flight connects to a shaft all affect the manufacturing route. A drawing is best, but a worn sample or a complete dimension set can also start the review.

Continuous flight for an uninterrupted helix

Cold-rolled flighting is formed progressively from strip and is suited to work that benefits from repeatable geometry along a continuous length. Mould-wound flighting provides another continuous route when near-equal thickness at the inner and outer edges is important. The correct option depends on the section, material and quantity rather than one method being universally better.

Sectional flight for larger or heavier geometry

Individual segments are considered when diameter, thickness, material or special features make a continuous route less practical. Segment geometry can be reviewed for later assembly and welding, including the preparation needed at the inside edge, outside edge and segment joint.

Profiled and serrated edge options

A rounded-edge section or a toothed outside edge is not treated as a cosmetic variation. The section profile, edge orientation and finished helix must be shown together. Use the rounded-edge or serrated product page only when that feature is part of the approved drawing.

Variable pitch and interacting screw sets

A variable-pitch flight needs a complete pitch schedule rather than one nominal pitch. Twin-screw mixing sets add another level of coordination because both hands, shaft centre distance, phase and running clearance must be checked together. These are separate product routes only when the drawing contains those structural requirements.

Complete shafted and shaftless assemblies

Loose flighting is different from a finished screw assembly. A shafted auger needs the centre member, welds and drive or support interfaces. A shaftless assembly needs its open-centre section, joints, overall length and end connections. These pages create a clearer route for buyers who need a complete replacement component rather than flighting alone.

Application-specific parts need their own checks

Vertical beater assemblies and twisted tape inserts appear in this category because they use helical geometry, but they are not interchangeable with conveyor flighting. Replacement parts require information about the original equipment, drive connection and operating duty. Heat-transfer inserts require tube fit, material and temperature information.

Information to send

• Outside and inside diameter
• Pitch, thickness, hand and required length
• Material grade or operating environment
• Quantity and whether supply is loose flighting or a complete assembly
• Drawing, sample photographs and application details

These inputs allow the manufacturing route to be checked before a fixed-size assumption is carried into quotation.