We propose suitable fastening conditions to our customers based on the screw examination tests!
The proposal of better contract terms is where the true value of a fastener manufacturer is demonstrated! Our company offers a wide range of measuring equipment specifically for fasteners.
At Yamashina, we offer a variety of measuring equipment specifically designed for fasteners, enabling us to propose better fastening conditions. With the support of our excellent senior engineers, who possess extensive testing know-how backed by a long history and the latest technology, we conduct tests and analyze their results to suggest optimal fastening conditions to our customers. **Test Items:** - Tensile strength (yield and fracture) - Shear strength - Fatigue testing (conducted externally) - Tightening fracture testing - Tightening relaxation testing - Torque-axial force relationship examination testing - Axial force creep confirmation testing - Threading rotation speed dependency testing - Temperature distribution testing during threading - Friction coefficient calculation - Cold and heat testing - Alternating immersion testing in saltwater - Salt spray testing - Electrical insulation evaluation testing - Ground bolt continuity testing - Chip analysis - Vibration testing (bolt standalone evaluation) - Plastic zone examination, etc. Please note that the test content may be constrained by bolt diameter and length. Additionally, costs may be high depending on global compliance and the types of tests conducted. There are also tests not listed above that can be performed using external testing facilities, and reports can be provided for those as well. Please feel free to consult us, including for cost estimates.
Inquire About This Product
basic information
For more details, please download the PDF or contact us.
Price range
Delivery Time
Applications/Examples of results
screw
Company information
Established in 1917, during the dawn of mass production of screws in Japan, the company succeeded in producing the first domestic cross-recessed screws in 1949 and cooperated with the government to localize tapping screws in 1954. The company holds data on over 200,000 types of screws and bolts, enabling the high-quality manufacturing of various shaped products. Recently, it has focused on investing in research and development, working on tapping bolts with a diameter of 6mm or more, high-strength aluminum bolts, tapping screws for thin steel plates, and tapping screws for CFRP, which will support the next generation. The company is committed to innovative technological development without being bogged down by history.
