
Cross-recessed (Phillips) raised cheese head (pan head) machine screws defined in the DIN 7985 standard published by the German Standardization Institute (DIN) are externally threaded fasteners designed to be combined with threaded nuts or threaded holes in parts designed to hold them together. These machine screws with cross countersunk raised Phillips pan head are used in many applications. The pan head is a cylindrical head with a slightly rounded top surface and a flat bearing surface at the bottom. This head style is ideal for most applications where a protruding head is acceptable. These screws are produced in steel as well as stainless steel.
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Similarly, the ISO 7045 standard published by the International Organization for Standardization (ISO) describes the specifications for Class A round-head screws with threads from M1,6 to M10 and with H-type or Z-type cross-recesses (ISO 7045 H-type or Z-type cross-recessed round-head screws - Product class A). In special cases, if specifications other than those listed in this standard are required, international standards such as ISO 261, ISO 888, ISO 898-1, ISO 965-2, and ISO 3506-1 should be followed.
Another standard published on this subject is the BS 4183 standard published by the British Standards Institute (BSI) (BS 4183 Specification for machine screws and machine screw nuts - Metric series).
Our organization, among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, with its trained and expert staff and advanced technological equipment, within the scope of DIN 7985 standard, for cross mortise (star) pan head machine screws, within the scope of ISO 7045 standard, It also provides testing services for H type or Z type cross recessed round head screws (product class A) and for machine screws and machine screw nuts within the scope of BS 4183 standard.
