Description: 3D Models Free Download, See The World In 3D, Make Mechanical Design Easier.
3d (9647) step (447) solidworks (418) 3d models (249)
This manual was written for design engineers to enable them to choose appropriate fasteners for their designs. Subject matter includes fastener material selection, platings, lubricants, corrosion, locking methods, washers, inserts, thread types and classes, fatigue loading, and fastener torque. A section on design criteria covers the derivation of torque formulas, loads on a fastener group, combining simultaneous shear and tension loads, pullout load for tapped holes, grip length, head styles, and fastener
Helical spring washers can be seen everywhere，but foreign production of machine tools, robots, manipulators, chemical pumps and other high-end equipment can hardly see helical spring washers, is it foreign engineers in order to cut save costs?
Valve stem seal generally used packing seal, packing by compaction to achieve sealing. Common fillers are graphite, PTFE V-rings, etc.