Trapezoidal Screw which is some times more commonly known as lead screw has a 30 degree contact angle. This product is different to Acme screw which has a different contact angle and is not compatible with trapezoidal screw.
In Australia our stock consists of Trapezoidal screw, not Acme screw. Statewide Linear Bearings has a large range of trapezoidal screws.
THK manufactures a nut formed by die castings of a special bearing alloy with high abrasion resistance. Other manufacturers typically use bronze or POM plastics for Trapezoidal nuts.
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