Screws with confidence and support

For example, stainless steel machine screws and self-tapping/thread-forming screws often need special care in selection. Not so much perhaps conventional steel chipboard screws, but help is often needed at the more specialised and professionally used end of the range such as SPAX & HECOFIX screws with their special thread forms, which enables them to cut into timber without a pilot hole.

Typical problems the team are called on to sort out include self-tappers (for steel) being used with plastic components without realising that there is a designed-for-plastic range. Normal (for steel) self-tappers can bind in the hole and snap off or split the component, leading to scrappage in production and perhaps serious problems when attempting an onsite installation.

Conventional hex headed bolts & setscrews are available ex-stock in 3 grades of steel, similarly with socket head cap screws. Many products are also available in A2(304) and A4(316) grades of stainless steel. Challenge Europe personnel can advise on hole sizes, clearances, torque, head types, thread forms and suitable substrates.