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1. IntroductionDIN938 stud bolt is a double-ended threaded fastener widely used in mechanical assembly, pipeline flanges, and equipment base fixing. As one of the most commonly specified German standard stud bolts, DIN938 features equal thread length on both ends and a plain shank in the middle, mak

1. IntroductionFull threaded rods are indispensable general fasteners for architectural suspension, pipeline support, mechanical assembly and steel structure connection. In European and international procurement markets, DIN975 and DIN976 are the two most common German standard full-thread bar speci

1. IntroductionIn modern steel structure engineering, connection quality directly determines the overall safety, stability and service life of buildings and infrastructure. Among all structural fasteners, 10.9S torsion shear bolts stand out as professional high-strength connecting parts specially de

1. IntroductionDIN935 castle nuts, also known as slotted hex nuts, are specialized mechanical locking fasteners designed for permanent anti-loosening and high-vibration working conditions. Different from ordinary hex nuts and nylon lock nuts, DIN935 adopts a unique top multi-slot open structure, whi

1. IntroductionDIN6923 hex flange nuts are one-piece integrated fasteners combining a standard hex nut and a large flange washer. Different from ordinary DIN934 hex nuts, the integrated flange design eliminates the need for separate flat washers, effectively enlarging the compression area and disper