Development, integrated production and sales of high-strength, high-quality bolts, precision machined parts, etc., for the aerospace, automotive and medical markets.

Lists of Businesses & Strengths[Company Information]

Since its foundation, MEIRA has been pursuing ever higher excellence in screw manufacturing, and continues to refine its technical capabilities to create new value for the future.

Our business presence in the aerospace, automotive and medical fields is unparalleled among other bolt manufacturers. We are also the only manufacturer in Japan supplying rods to the aerospace business.
Moreover, group companies include DAIYA KOKI CO., LTD., which develops and manufactures jigs and tools, auxiliary equipment for heading and roll thread machines, and QA equipment. One of the strengths of MEIRA can be said to be its active engagement in the development of processing equipment for difficult to process metals and nonmetals.

The products we handle include products that can withstand the extremely harsh environments dealt with in the aerospace field, products that can contribute to weight reduction in the automotive field, products that boast very high strength, and also human-friendly medical implants made of titanium. In each of these various fields, in addition to working on research and development of state-of-the-art, high-level products, we pour our strength into developing unique products based on the synergies produced by the exchange of knowledge and experience among engineers from different fields.

Further, we work ceaselessly to improve production efficiency to allow us to continue providing products that are genuinely competitive at the global level, through efforts ranging from thorough cost reductions in mass production to supporting small-lot production of many different products in response to diversifying needs.

Business Fields Divisions Major Products
Automotive/General Industry Field Automotive Division
  • High-strength bolts (for engines, suspensions, etc.)
  • Bolts of various specifications
  • Aluminum bolts for automobiles
  • Combination parts of steel bolt and resin washer
  • Precision cold forming parts
Aerospace field Aerospace Division
  • Precision fasteners such as ultra-high-strength bolts and nuts
  • Push-pull rods, tie rods and other types of rods
  • Machined parts (integrated processing operations from material supply to cutting, heat treatment, non-destructive inspection, surface treatment, painting, etc.)
Medical field Medical Division
  • Orthopedic bone screws and plates
  • Implants for sport orthopedics
  • Surgical instruments


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