Helix Linear twin-lead screws are designed with a left and right hand thread for dual and opposing motion. Helix offers several sizes of twin-lead screws as standard products and manufactures nearly any size screw on request.
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1-4 Twin-Lead Acme Screw
1/2"-10 Twin Lead Acme Screw. Screw only.
5/8-8 Twin Lead Acme Screw - Screw Only
3/4-3 Twin Lead Screw
3/4-5 Twin Lead Acme Screw
TR 8x4 Twin Lead Trapezoidal Screw - Screw Only
TR 8x8 Twin Lead Trapezoidal Screw - Screw Only