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What are Double Ended Metric Studs with a Dog Point?
Double ended metric studs with a dog point are threaded studs with external metric threads on both ends, an unthreaded center section, and a short reduced-diameter cylindrical pilot on one end. One end is typically installed into a tapped hole or threaded component, while the opposite end provides a threaded attachment point for a metric nut or other component.
The dog point acts as a lead-in feature that helps guide the mating nut into alignment with the stud threads, making assembly faster and helping reduce the possibility of cross-threading.
These are special articles that vary dimensionally from the DIN and ISO dimensional standards for double ended studs, including standards such as DIN 938 and DIN 939.
What material are these Double Ended Metric Studs made from?
These studs are manufactured from hardened Class 10.9 or Class 12.9 high-strength steel with a plain, uncoated finish. Class 10.9 steel provides high tensile strength for demanding mechanical fastening applications, while Class 12.9 provides an even higher level of tensile strength and hardness for applications requiring greater mechanical strength. The plain finish leaves the steel uncoated and is commonly used for dry indoor applications, protected assemblies, or applications where corrosion protection is supplied separately.
Why choose Class 10.9 or 12.9 Hardened Steel Double Ended Studs with a Dog Point?
The combination of high-strength hardened steel and a dog point provides a durable threaded connection with an assembly-friendly lead-in feature. Class 10.9 studs are a strong choice for demanding general mechanical applications, while Class 12.9 studs are suited to applications requiring higher strength and hardness.
The reduced-diameter dog point helps the nut locate the stud quickly and engage the threads smoothly, which can be particularly beneficial in production environments, blind or restricted-access assemblies, and applications where rapid installation is important. The dog point also helps protect the first full thread of the stud from damage during nut engagement, reducing the likelihood of cross-threading and improving assembly consistency.
Where are Double Ended Metric Studs with Dog Points commonly used?
Class 10.9 and 12.9 hardened steel double ended studs with dog points are commonly used in automotive manufacturing, engines, transmissions, motorcycles, machinery, machine tools, industrial equipment, automation equipment, robotics, fixtures, jigs, pumps, motors, gearboxes, brackets, housings, and mechanical assemblies.
They are particularly useful for attaching covers, panels, brackets, mounting plates, guards, manifolds, flanges, and other removable components where a conventional bolt may not be practical and fast, repeatable nut engagement is desirable.
The dog point is especially valuable in high-volume OEM production, assembly-line manufacturing, equipment manufacturing, maintenance, repair, and fabrication where quick alignment and reduced cross-threading can improve installation efficiency. These high-strength metric studs are also useful wherever a durable double ended threaded connection is required and the application calls for either Class 10.9 or the higher-strength Class 12.9 steel grade.
