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  楔键用键槽 [技术标准]
GB /T 1563 - 2017 楔键用键槽
Taper keys of keyways

  沉头螺钉用沉孔 [技术标准]
GB /T 152.2 - 2014 沉头螺钉用沉孔
Countersinks for countersunk head screws

    [技术标准]
GB 5277 - 1985 紧固件 螺栓和螺钉通孔
Fasteners - Clearanc holes for bolts and screws

  紧固件. 螺栓和螺钉用通孔 [技术标准]
ISO 273 - 1979 紧固件. 螺栓和螺钉用通孔
Fasteners─Clearance holes for bolts and screws

    [技术标准]
DIN 7975 - 2016 自攻螺钉安装用孔(底孔)的直径及拧紧力矩
Tapping screw connections - Guideline values for core hole diameters and use

    [技术标准]
DIN 7500-2 - 1984 米制三角锁紧螺纹安装用光孔尺寸
Thread rolling screws for ISO metric thread guidelinge values for hole diameters

    [技术标准]
DIN EN 20273 - 1992 紧固件 螺栓和螺钉通孔
Fasteners - Clearanc holes for bolts and screws

    [技术标准]
HG /T 20614 - 2009 钢制管法兰、垫片、紧固件选配规定(PN系列)
Specification for Selection of Steel Pipe Flanges , Gaskets and Bolting (PN designated)

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