Hex Head Setscrews with fine pitch DIN 961 in A2 Stainless Steel
A metric fine thread version of the common DIN 933 / ISO 4017 hexagon head set screw. Fine pitch variant
screws have some distinct advantages over their coarse pitch counterparts. Size for size they are stronger
than the coarse thread versions "in tension" as there is a larger stress (contact) area. They also have
a larger minor diameter meaning shear is less likely. Fine Pitch set screws have less tendancy to loosen
as they have a much smaller thread incline. Fine pitch bolts should be preferred if being used to adjust
settings, as they give closer, more precise control. Some downsides of using Fine pitch bolts or screws
are they are slower to install, so not ideal where quick fitment and removal are required and they are
also more likely to suffer from thread galling (see our reference section).
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Westfield Fasteners Limited is a company registered in England and Wales with company number 07215583.
Registered Address: Westfield Fasteners Limited - Westfield Road - Long Crendon - Aylesbury - HP18 9EW - UK