A New Tightening Method of Rotary Shouldered Connections

Shinji Hashimura, Yukitaka Murakami, Kazuya Mori, Kunihiko Mineki

Research output: Contribution to journalArticlepeer-review


A new tightening method for the rotary shouldered connection (RSC) has been developed. In the developed method, the coefficients of friction between mating thread surfaces and between mating shoulder surfaces can be accurately and separately detected by sinultaneous loading of torque and compressive force to RSC. The tightening experiments have been achieved to verify the serviceability of the developed method. The 1/4 scale model of NC50 are used as the test model of RSC. The scatter band of axial force on RSC has been reduced within the error of ±10 % under lubricated conditions by grease with MoS2. The reliability of the method is compared with Baryshnikov's method.

Original languageEnglish
Pages (from-to)4066-4071
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Issue number652
Publication statusPublished - 2000
Externally publishedYes


  • Axial Force
  • Petroleum Technology
  • Rotary Shouldered Connection
  • Tightening Method

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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