How to find the right Knobs & Hand Wheels AI guide

Written by an AI model from its trained knowledge.

What the AI looks for in Knobs & Hand Wheels

Thread and mounting match: Match the thread exactly, metric (e.g. M8) or inch (e.g. 5/16-18), and choose a tapped insert, a threaded stud or a through bore with set screw for the shaft you have. A knob that does not fit the shaft is useless, and mixing metric and inch threads cross-threads soft inserts.
Insert material: Prefer a brass or steel threaded insert over threads tapped straight into plastic for anything tightened by hand repeatedly. Threads tapped directly into plastic strip under clamping torque.
Body material vs environment: Phenolic (Duroplast) for heat and oil, glass-filled polyamide/technopolymer for general use, stainless steel for washdown or food areas. The wrong body material cracks, softens or corrodes in that setting.
Grip shape vs torque: Star, lobe and T shapes for clamping torque; knurled and fluted for fine turning; ball knobs for levers; hand wheels for continuous rotation. Shape sets how much torque a hand can apply comfortably.
Standard designation: Look for DIN/GN-numbered parts (e.g. DIN 319 ball knobs, DIN 6336 star knobs) when you need an exact replacement. Standardized parts keep consistent dimensions across makers.

Elesa+Ganter: Broad catalog of DIN/GN-standard knobs, handles and hand wheels in plastic and metal.
J.W. Winco: North American supplier of the Elesa+Ganter range, in both inch and metric sizes.
Kipp: German maker of clamping knobs, star grips and indexing hardware.
Davies Molding: US molder of phenolic and thermoplastic knobs and handles.
Morton Machine Works: US source for metal hand wheels, knobs and clamping hardware.

A tapped (female) knob goes onto an existing bolt or stud; a male stud knob threads into a tapped hole. Check which one your part needs.