Sharp Screw Products
Custom machined screw resource manufacturing close tolerance precision screw components and prototypes for all commercial and industrial applications.
http://www.sharpscrewproducts.com/

Merced Screw Products
Offers automatic screw machine services via multi-spindle and single spindle screw machines. Also provides CNC operations.
http://www.geocities.com/mercedscrew/

Dowson Group
The Wrights Dowson Group can provide all your needs for conveyor systems including standard products, spares and bespoke solutions
http://www.dowsongroup.com/

Continental Screw Conveyor
Manufactures screw, bucket, and drag conveyors, and mixers. Includes products and profile.
http://www.continentalscrew.com/

Cleeve Material Handling
Cleeve Materials Handling Ltd specialise in providing a wide range of Screw Conveyors, Screw Feeders and Bin Dischargers in various sizes and materials to meet clients' specific requirements.
http://www.screw-conveyors.co.uk

Steel Foundations Limited
Develop, manufacture and provide screw piling technology to the residential, commercial and civil construction industries. Australia.
http://www.steelfoundations.com.au/

Irmer+Elze
Manufactures and sells portable diesel driven screw compressors, generators and pneumatic tools for construction and industrial applications.
http://www.irmerelze.com

Hyland Screw Machine Products
Contract manufacturer for the automotive, business machinery, and fitting. Features multiple spindle screw machines with a capacity to 2-5/8" as well as CNC equipment.
http://www.hylandmach.com

Screw Conveyor Corporation
Manufacturer of screw and drag conveyors, bucket elevators, and truck dumpers. Contains products, company history, news, safety information, and divisions.
http://www.screwconveyorcorp.com/

Serinol
Manufacturer of wastewater and waste treatment equipment including rotating sieves, trommels, dissolved air flotation units, screw compactors, screw conveyors and sand classifiers.
http://www.serinol.com/