Abstract: Provided is a threaded-hole inspection device having high inspection precision. An incomplete thread ridge portion of a gauge portion 5 of a thread gauge 1 is removed, a phase-positioning portion 8 for positioning a tip-side start point 7 of a complete thread ridge at a prescribed phase when the thread gauge 1 is mounted on a rotating-shaft portion 2 is provided to a fastening portion 6 of the thread gauge 1 that is to be fastened to the rotating-shaft portion 2, and a phase-positioning engaging portion 9 that is to engage with the phase-positioning portion 8 is provided to the rotating-shaft portion 2.

Abstract: Provided is a threaded-hole inspection device having high inspection precision. An incomplete thread ridge portion of a gauge portion 5 of a thread gauge 1 is removed, a phase-positioning portion 8 for positioning a tip-side start point 7 of a complete thread ridge at a prescribed phase when the thread gauge 1 is mounted on a rotating-shaft portion 2 is provided to a fastening portion 6 of the thread gauge 1 that is to be fastened to the rotating-shaft portion 2, and a phase-positioning engaging portion 9 that is to engage with the phase-positioning portion 8 is provided to the rotating-shaft portion 2.

Abstract: A blow-molded multi-ply vessel having excellent physical properties and good appearance which comprises two or more kinds of thermoplastic resins, at least one of which is a thermoplastic polyester resin, said vessel having a multi-ply structure of three or more layers at least at the thin wall part of the body thereof and a single layer structure at least at the open end of the mouth part thereof, and at least the thin wall part of the body being biaxially orientated. The vessel is produced by sequently and alternatively injecting two or more kinds of molten thermoplastic resins into one mold with shifting injection timing from a molding machine having plural injection cylinders with one mold closing operation to form a multi-ply parison and then blow-molding the parison at an orientating temperature.

Abstract: A thermosetting injection molding compound comprising a specific crystalline unsaturated polyester comprising (A) a crystalline unsaturated polyester of terephthalic acid/fumaric acid=5/5-1/9 by mol (acid component) and 1,4-butanediol/other glycol=7/3-10/0 (glycol component) and (B) a styrene type monomer and/or allyl type monomer, and having specific ranges of a viscosity, a melting point and an acid value, said crystalline unsaturated polyester resin being admixed with (C) a glass fiber and (D) other additives in a specific ratio.