มอก. 671-2530

Scope (English)

Covers hexagon socket set screws made of carbon steel or alloy steel having ISO metric screw threads with diameters and pitches according to those prescribed in TIS 159, 3-24 mm nominal diameters and 45 H property class. Excludes screws requiring special properties such as tensile stresses, weldability, etc. Classifies the set screws into 4 types according to the points, i.e. flat point, cone point, dog point and cup point. Specifies shapes, dimensions and tolerances. Prescribes requirements for mechanical properties, (i.e. Vickers hardness, Brinell hardness, etc.), torque strength, finish. Includes packaging, marking, labelling, sampling and criteria for conformity, testing.