Other materials are available to order, including Brass, Aluminium, Titanium, and many more.Īvailable now in thread diameters from M1.4 to M12 as standard, and lengths from 6mm to 300mm. They are now required by EU law on some equipment such as safety guards.Ĭap Head Reduced Shank Captive Screws are manufactured from A2 / 304 Stainless Steel and A4 / 316 Stainless Steel as standard, with the latter specialised for prolonged exposure to aquatic environments. These components are often used for safety equipment, as well as within the manufacturing and military industries. Designed to self-retain post installation, which prevents the loss of screws. This screw is an adaptation of DIN 912 / ISO 4762 with a plain portion leaving a reduced core diameter. When used alongside Captive Screws, the washer compresses during assembly to lock over the reduced shank and prevent loosening. The unthreaded portion is typically used to retain a Threaded Captive Washer. Cap Head Reduced Shank Captive Screws are one of the most popular types of Captive Screw, and are designed with an unthreaded portion below the head – often referred to as the reduced shank.
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