DIN653 Knurled Thumb Screws, Thin Type

We will continue to improve our business capabilities, create superior nuts ISO9001:2008, set screws, all thread bolt, lead the industry and achieve the metamorphosis from excellence to the best. Our products are mainly exported to many countries all over the world. We can guarantee the supply of our company. At the same time, we uphold the 'customer first' principle to provide you with intimate service. Enterprises should take equal opportunities in market competition and use the market competition mechanism of survival of the fittest to form a strong market competition structure and improve their competitiveness.

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Hardware: a screw with a hexagonal recess in the head that is designed to be used with an Allen wrench <At the bottom of this hole is the Allen screw holding the two halves of the elevation knob together. — Patrick Sweeney, Gunsmithing: Rifles, 1999>

Usually the standard is regarded as DIN912

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