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①,材料 a、合金钢应符合ASTM A574 b、不锈钢应符合ASTM F837 ②,除非客户另有规定,否则制造商可以选择平头或滚花头。 对于滚花螺钉,最大头部直径应在滚花顶部测量,最小头部直径应对于那些没有滚花部分的螺钉,它是未滚花部分的直径或滚花顶部的直径,刚好在头部底部边缘的半径或倒角上方。 ③,螺纹: 螺纹为ASME B1.1 规定的统一螺纹,英寸制,UNRC粗牙或UNRF细牙系列,具体如下所述: 1. 螺钉公称直径0#(0.060 in.)~ 1 in. 的,为UNRC和UNRF系列,3A级精度; 2. 螺钉公称直径>1 in. ~ 1-1/2 in. 的,为UNRC和UNRF系列,2A级精度; 3. 螺钉公称直径>1-1/2 in. 的,为UNR系列,2A级精度。 有镀层或无镀层的检查验收,按ASME B1.3M中“22”体系要求。 3A级精度没有提供镀层容差。 ④,表面粗糙度: 对于公称直径小于等于5/8英寸且公称长度小于等于8倍螺钉公称直径的合金钢螺钉,其镀前的表面粗糙度要求为:在圆角和支承面上不超过63μin(算术平均值);螺纹的表面粗糙度不超过32μin(算术平均值)。 对于大规格、长螺钉及耐蚀钢螺钉,其镀前的表面粗糙度,杆部圆角和支承面不应超过125μin(算术平均值)。 通常,这些相当于机加工的螺钉表面,通过目测就可以判断是否符合相关的粗糙度标准。但是,必要时也应采用仪器对表面粗糙度进行测量。杆部和圆角面应轴向测量,支承面应在圆周面测量(见ASME B46.1《表面结构》)。 |
类似标准及供货信息
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[德标] DIN 7964 (E) - 1990 |
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[德标] DIN 6912 - 1985 |
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[德标] DIN 7984 - 1985 |
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[国际] ISO 4762 - 1997 |
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[日标] JIS B 1176 - 2006 |
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[汽标代号] Q 218B |
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[美标] ASME/ANSI B 18.3 - 1986 |
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[美标] ASME/ANSI B 18.3.1M - 1986 (R1993) |
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[美标] ASME/ANSI B 18.3.1M - 1986 (R2008) |
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[美标] ASME/ANSI B 18.3 - 2003 |
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[意大利] UNI 5931 - 1984 |
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[意大利] UNI 9327 - 1988 |
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[法国] NF E 25-125 - 2004 |
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[英标] BS 4168-1 - 1981 |
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[英标] BS 2470 - 1973 |
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[英标] BS 2470 - 1973 |
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[英标] BS 2470 - 1973 |
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[澳标] AS 1420 - 2008 (R2015) |
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[台湾] CNS 3932 - 1998 |
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[台湾] CNS 4555 - 1981 |
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[台湾] CNS 4556 - 1981 |
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[韩标] KS B 1003 - 2015 (R2020) |
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[韩标] KS B 1003 - 2000 |
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[建筑] JG /T 5057.10 - 1995 |
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48 |
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[德标] DIN EN ISO 12474 - 2011 |
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49 |
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[德标] DIN EN ISO 4762 - 2004 |
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[印标] IS 2269 - 2006 |
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51 |
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[美国军标] MS 16995 (H) - 1997 |
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[美标] ASME B 18.3 - 2003 (R2008) |
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55 |
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[航天] QJ 2582 (A) - 2011 |
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56 |
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[航天] QJ 2582 - 1993 |
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57 |
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[航空] HB 1- 149 - 1995 |
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58 |
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[航空] HB 1- 149 - 1983 |
内六角对接螺栓 Hex Butt Joint Bolt |