Rosan®-Style Ring And Key Locking Studs
PTP produces Rosan® Style Studs and Ring and Key Lock Studs in 303 Stainless, A286, 4140 Alloy Steel, Alloy 718 (INCONEL™ 718), 6A1-4V titanium and Waspaloy to MS, AN, AS, NAS and other specifications. All studs are available in a wide range of sizes and styles in standard configurations or with standard or Lok-thread features, and with various plating options. PTP produces the MS part-numbers that cross reference to both Shur-Lok® and Arconic® part numbers.
Studs are used in structural assemblies, such as forgings, turbine engines, castings and machined components where a nut is the preferred retention component by design. Studs act as a renewable hardened fastener platform to prevent thread wear and as permanent locators for component assemblies.
Studs are manufactured in many sizes and thread configurations, allowing oversize stud ends to be used for component repair while still allowing the use of intended nut sizes. This eliminates the need for additional fasteners or assembly tools.
Processed to strict government requirements, PTP Ring Lock and Key Lock Studs (also known as Staked Studs) withstand multiple assembly / disassembly cycles without appreciable wear, and are available with standard or Lok-thread designs to enhance fastener retention and security.
PTP Ring Locked Studs have a serrated collar and are installed in specially prepared, tapped holes in the parent material. Once installed to the proper depth, a serrated lock ring is driven over the serrated stud collar to complete the installation and prevent the stud from rotating or backing out.
PTP Key Locked Studs have machined lateral slots and employ preassembled keys to generate the locking mechanism. Once installed to the proper depth in specially prepared, tapped holes in the parent material, the keys are driven into the mating threads to create a permanent installation and prevent the stud from rotating or backing out.
Ring and Key Lock Studs are produced in a wide variety of materials to MS, AN, NAS, SAE and other specifications. All studs are available in a wide range of sizes and styles in standard configurations or with standard or Lok-thread features. Additionally, PTP can manufacture to customer-specific designs, requirements and finishes, with cadmium being the most common.