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GB/T 923-88
盖形螺母
Acorn nuts
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GB/T 78-2000
内六角锥端紧定螺钉
Hexagon socket set screws with cone point
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GB/T 79-2000
内六角圆柱端紧定螺钉
Hexagon socket set screws with dog point
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GB/T 818-2000
十字槽盘头螺钉 818-85
Pan head screws with cross recess
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GB/T 9074.5-88
十字槽小盘头螺钉和平垫圈组合件
Cross recessed small pan head screw and small plain washer assemblies
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GB/T 9074.1-2002
螺栓或螺钉和平垫圈组合件
Bolt or screw and washer assemblies with plain washers
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GB/T 9074.2-88
十字槽头螺钉和外锯齿锁紧垫圈组合件
Cross recessed pan head screw and serrated lock washer external teeth assemblies
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GB/T 900-88
双头螺柱 bm=2d
Double end studs--bm=2d
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GB/T 901-88
等长双头螺柱 B级
Double end studs(clamping type) -Product grade B
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GB/T 39-88
方螺母 C级
Square nuts-product grade C
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