加拿大外贸
客户坚称他们需要的是screws，but not bolts我的天，事实上这两个词经常混用，我该怎么解释捏，用E文的，拜托！
[ 本帖最后由 tinalijing 于 2008-4-18 23:20 编辑 ]
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原文附上：
Sorry to tell you that we could misunderstand each other, what we need in last inquiry are screws , but not bolt.
I’m sorry about that if I have mislead you to wrong understanding, and hope to hearing from you sooner for this inquiry.
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screw和bolt，我的理解就是螺钉和螺栓的区别……
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从客户的图纸看，是不带尖头的，应该算bolt了？
客户是荷兰的，真不知道他们是怎么区分的，要不问问清楚？
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嗯嗯，还是问清楚比较好
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个人认为(形状区分):用扳手或者套筒安装的叫BOLT，用螺丝刀装的叫SCREW
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最好让客户给你发一个样图过来,既解决了此次误报的问题,还弄清楚的两个词的正确区分,呵呵
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很专业细微的东西 还是图样直接点
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我也支持这个理解，感觉是这样的
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screw 应该是那中细长的尖点的螺丝
bolt应该是短的比较粗的不是很尖的那种螺丝（也可以说是螺栓）
这个是从外型上的区分。
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wikipedia可以上了
http://en.wikipedia.org/wiki/Screw
Differentiation between bolt and screw
A universally accepted distinction between a screw and a bolt does not exist.
In common usage the term screw refers to smaller (less than 1/4 inch) threaded fasteners, especially threaded fasteners with tapered shafts and the term bolt refers to larger threaded fasteners that do not have tapered shafts. The term machine screw is commonly used to refer to smaller threaded fasteners that do not have a tapered shaft.
Various methods of distinguishing bolts and screws exist or have existed. These methods conflict at times and can be confusing. Old SAE and USS standards made a distinction between a bolt and a cap screw based on whether a portion of the shaft was un-threaded or not. Cap screws had shafts that were threaded up to the head and bolts had partially threaded shafts. Today a bolt that has a completely threaded shaft might be referred to as a tap bolt.
ASME B18.2.1 defines a bolt as "an externally threaded fastener designed for insertion through the holes in assembled parts, and is normally intended to be tightened or released by torquing a nut". Using this definition to determine whether a particular threaded fastener is a screw or a bolt requires that an assumption be made about the intended purpose of the threaded fastener and as a practical matter doesn't seem to be followed by most threaded fastener manufacturers. It also conflicts with common usage such as the term, "head bolt", which is a threaded fastener that mates with a tapped hole in an engine block and is not intended to mate with a nut.
It is possible to find other distinctions than those described above, but regardless of the particular distinction favored by an individual or standards body the use of the term screw or bolt varies. More specific terms for threaded fastener types that include the word screw or bolt (such as machine screw or carriage bolt) have more consistent usage and are the common way to specify a particular kind of fastener.
The US government made an effort to formalize the difference between a bolt and a screw because different tariffs apply to each. The document seems to have no significant effect on common usage and does not eliminate the ambiguous nature of the distinction for some fasteners. It is available here
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yes , you are right!
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screw 是螺钉， 是有逐渐变小的螺纹的，头部一般是十字的，有个名称叫十字螺钉；一般要用十字的扳手才能旋开；
BOLT是螺栓，一般头部是多边形（正常应该是六边的），主体部分是圆柱形的； 要用呆扳手才能旋开！
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有图就一切明了啦。。。。。。
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78% COTTON 17%POLIAMIDE 5%ELASTAN 160GR.
85% POLYAMIDE 15% ELASTAN 160GR.
96%COTTON 4% ELSATAN 160GR
100% COTTON SINGLE JERSEY 160GG PRT AND SOLID
100% COTTON INTERLOCK 160GR , SOLID
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