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Knurled thumb screws 654
Description
This is a fully threaded screw with a 19.5mm diameter large knurled head. It has a fairly large head, which is ideal for fixing fixtures.
Advantages
This screw can be assembled by hand but also with a flat screwdriver. It thus offers a grip for advanced tightening.
Qualities For the majority of screws there is an integral thread up to 80mm. For lengths 15 and 17 mm - 5 mm not threaded under the head.
usage
Used in industry and in aeronautics, this screw is a master screw that can be used in various more or less complex fields.