Ondrives precision worms are manufactured with 20 deg. PA to quality grade 7e25 DIN 3974/3967. Available as both shaft and bore type with optional number of starts in Steel, Hardened Steel, Stainless Steel, Peek and Delrin. We can supply to standard, modified or customers drawings and specifications with full traceability, first article inspection reports (F.A.I.R), and inspection reports.