GOST ISO 7380-1-2014 Pan-head screws with hexagon socketScrews GOST ISO 7380-1-2014 – this product has a semicircular head and a hexagonal socket. Use will also require nuts (hex, square, or weld). The use of washers of various configurations (grovers, flat, etc.) will help to make the connection more reliable.
Description of the product design and its features
recess and a cylindrical threaded rod. Products must be manufactured with accuracy class A and B.
Tolerances: 5g6g for strength classes 12.9 / 12.9: 6d for other strength classes
Markings: 08.8, 010.9,012.9 / 012.9 p>
The material of manufacture must have strength class 8.8, 10.9.12.9/12.9а.
Care should be taken when using property classes 12.9 / 12.9 . Consideration should be given to the capabilities of the fastener manufacturer, operating conditions and screwing methods. Exposure to the environment can cause stress corrosion cracking of fasteners, whether uncoated or coated. b The marking symbols for fasteners made of corrosion-resistant steel with reduced load-bearing capacity are intended to be included in the next edition of ISO 3506-1.
Due to the design of the head, such screws may not meet the minimum breaking load specified in ISO 898 -1. However, they must comply with the other material and property requirements for the respective property classes specified in ISO 898-1. In addition, if full-size screws are tensile tested in accordance with ISO 898-1, they must withstand the minimum breaking load shown in table 3. If tested to failure, rupture may occur in the area of the thread, head, shank or head joint – rod.
Due to the design of the head, these screws may not meet the minimum breaking load specified in ISO 3506-1. However, they must comply with the other material and property requirements for the respective steel grades specified in ISO 3506-1. In addition, if full-size screws are tested for strength in accordance with ISO 3506-1, the screws must withstand without breaking the minimum breaking load shown in Table 3. If tested to break, rupture may occur in the area of the thread, head, shank or head joint. – the rod. The reduced minimum breaking load values are determined on the basis of Rm min and As nom in accordance with strength classes 70 and 80 according to ISO 3506-1, see table 3.
Do not use electrolytic coating for screws with property classes 12.9 /12.9: for more information see ISO 4042.
An example of GOST ISO 7380-1 designation, marking of fasteners made of steel with reduced load-bearing capacity are set in ISO 898-1:
Screw with round head and hexagon socket with thread M12, nominal length / = 40 mm, strength class 10.9 in accordance with ISO 898-1, are denoted as follows:
Pan head screw with hexagon socket< p> GOST ISO 7380-1-M12x40-010.9
Example of designation: A round head screw with a hexagon socket with an M12 thread, nominal length / = 40 mm, steel grade A2 and strength class 70 in accordance with ISO 3506-1 are designated as follows:
Pan head screw and hex deep recess
GOST ISO 7380-1-M12x40-A2-070
Product application areas
These screws are used in many industries industry. Increased demand for products, in particular, is observed in the aircraft and mechanical engineering industries, as well as in construction, energy and metalworking, where they are used for reliable fastening of parts and metal structures.
ANALOGUES p >
Screw iso 7380 1 analogue to DIN 7380 Pan head screw with hexagon socket