Trapezoidal nut 18x4 left-hand hexagonal, steel

Product Description

Trapezoidal nut 18x4 left-hand hexagonal, steel

The nut works with a trapezoidal screw with the same thread - choosing the correct size and thread hand is key to the correct operation of the mechanism. Material: Steel 11SMnPb37 (1.0737). Left-hand thread Tr 18x4, made in accordance with DIN 103 / ISO 2901-2904.

Technical data

Frequently asked questions

Which trapezoidal screw fits this nut?

You need a screw Tr 18x4 with the same thread hand (left-hand) and the same pitch - other sizes will not fit together.

Does a standard trapezoidal nut have backlash in the thread?

Yes, some backlash results from the manufacturing tolerance of the thread - this is normal. If you need zero backlash (e.g. for precise positioning), anti-backlash nuts are used, which are a different product from a standard nut.

How do the material families of trapezoidal nuts differ?

Steel is chosen for fastening joints without sliding motion, bronze for drives with continuous sliding motion (low friction), and brass for lighter applications where moisture resistance matters at a lower cost than bronze.

What does the symbol Tr 18x4 mean?

"Tr" is a symmetrical trapezoidal thread (flank angle 30°). The first number is the outer diameter of the screw in millimetres, the second is the thread pitch, i.e. the linear travel per full turn.

What are the properties of this nut's material?

Material: Steel 11SMnPb37 (1.0737) - structural steel with good machinability, used where the nut works as a fastening element, not a sliding one.

How is this nut mounted in the mechanism?

A shape known from classic nuts - easy mounting with an open-end or ring spanner.

Where are 18x4 trapezoidal nuts used?

18x4 trapezoidal nuts are used in screw jacks, presses, vices, positioning tables, linear axes of CNC machines and tensioning mechanisms - wherever the rotary motion of a screw must be converted into precise, repeatable linear motion.

Product photos are for illustration purposes.