Fasteners
紧固件
Technical delivery conditions
发货技术条件
Design and dimensional accuracy
设计和尺寸精确度
DIN
267
Part 2
第2部分
Mechanische Verbindungselemente; technische Lieferbedingungen; Ausführung und Maßgenauigkeit
紧固件；发货技术条件；设计和尺寸精确度
This standard, together with DIN ISO 4759 Part 1, May 1980 edition, supersedes April 1968 edition.
此标准与1980年5月版的DIN ISO 4759的第一部分一起替代1968年4月版的标准。
In keeping with current practice in standards published by the International Organization for Standardization (ISO), a comma has been used throughout as the decimal marker.
为了与国际标准组织（ISO）的现行标准条例相符，使用逗号作十进制标记。
The previous edition of April 1968 of DIN 267 Part 2 has been partly superseded by the May 1980 edition of DIN ISO 4759 Part 1, which incorporates International Standard ISO 475911 - 1978 and serves as the basis or reference standard for product standards (dimensional standards) dealing with bolts, screws and nuts (see also Explanatory notes)
1980年5月版的DIN ISO 4759的第一部分与国家标准ISO 475911-1978相结合，取代了1968年4月版的DIN 267第2部分的部分内容，并成为螺栓、螺钉和螺母的产品标准（尺寸标准）的基础或参考标准（参见注释）
The international standard primarily applies to bolts, screws and nuts with metric thread, but can, like DIN 267 Part 2, also be applied as appropriate to other products such as tapping screws and wood screw.
此国际标准主要适用于公制螺纹的螺栓、螺钉和螺母，但是如DIN 267的第2部分一样，也适用于诸如自攻螺钉和木螺钉等其他产品。
1 Scope and field of application
1 适用范围和领域
This standard supplements DIN ISO 4759 Part 1 and applies to those product standards (dimensional standards) in which DIN 267 Part 2 is referred to, e.g. with regard to the surface roughness of bolts, screws and nuts.
此标准补充说明了DIN 1SO 4759的第一部分，适用于DIN 267的第2部分中所涉及的产品标准（尺寸标准），如螺栓、螺钉和螺母的表面粗糙度标准。
Note: The illustrations providing information on the tolerances, which were included in the April 1968 edition of DIN 267 Part 2, have to a large extent been replaced by the specifications given in ISO 4759 Part 1. In this standard, only individual characteristics of fasteners, e.g. bolt lengths, have been toleranced, so that the individual product types are not illustrated, or are only shown in part. To simplify the use of both these standards, the previous illustrations have been assembled in Supplement 1 to DIN 267 Part 2.
注释：1968年4月版的DIN 267的第2部分中提供公差信息的插图在很大程度上已经被ISO 4759第一部分中的规范所替代。本标准中仅提供了紧固件的单个特征公差，如螺栓长度，因此，并未说明单个产品的类型，或仅显示了部分产品类型。为了简化两种标准的使用，因此，将之前的插图融合进DIN 267第2部分的附录1中。
In cases of doubt, the specifications given in the product standard or in ISO 4759 Part 1 and in this standard shall apply
如有任何疑问，则以产品标准或ISO 4759第一部分以及本标准中的规范为准。
It is recommended that Standards ISO 4759 Part 1 and DIN 267 Part 2 should also be used for non-standardized fasteners and that these standards should be referred to giving details of the respective product grade in the purchase order documents.
标准ISO 4759第一部分和DIN 267第2部分也可用于非标准化的紧固件，在订货单文件中，应以这些标准为基础，详细描述各个产品。
2 General
2 概述
ISO 4759 Part 1 shall apply with regard to the design and dimensional accuracy of fasteners (primarily of bolts, screws and nuts), unless other specifications are given in the individual product standards or purchase order documents. ISO 4759 Part 1 covers bolts, screws and nuts with nominal thread diameters from 1,6 up to and including 150 mm, assigned to the following three product grades:
除非单个产品标准或订货单文件中另有规定，否则ISO 4759的第一部分将适用于所有与紧固件的设计和尺寸精确度有关的标准（主要是螺栓、螺钉和螺母）。ISO 4759的第一部分适用于公称螺纹直径介于1.6毫米到150毫米（包括150毫米）之间的所有螺栓、螺钉和螺母，并将其分为三个产品等级：
product grade A (previously design m, medium),
产品等级A（以前的设计m，中等），
product grade B (previously design mg, medium coarse) and
产品等级B （以前的设计mg,中粗的）和
product grade C (previously design g, coarse),
产品等级C（以前的设计g,粗的），
the reference dimension for allocating the tolerances being the individual dimension specified in the relevant product standards (dimensional standards).
分配公差时，以相关的产品标准（尺寸标准）中所规定的单个尺寸为参考。
DIN 7168 Part 1 shall apply with regard to those dimensions which are not toleranced in this standard, nor in ISO 4759 Part 1, nor in the product standards (dimensional standards). In these cases, DIN 7168, accuracy grade m shall apply with regard to general tolerances assigned to product grade A (previously design m);
DIN 7168的第一部分适用于本标准中、ISO 4759的第一部分中以及产品标准（尺寸标准）中都未提供公差的尺寸。在此情况下，DIN 7168，精确度等级m适用于分配给产品等级A的一般公差（以前的设计m）；
DIN 7168, accuracy grade g shall apply with regard to general tolerances assigned to product grades B and C (previously designs mg and g).
DIN7168，精确度等级g适用于分配给产品等级B和C的一般公差（以前的设计mg和g）。
Note: The change of the previous nomenclature designs m, mg and g, to product grades A, B and C is based on the international specifications given in ISO 4759 Part I. It is not necessary to amend existing documents accordingly.
注释：根据ISO 4759的第一部分中的国际规范更改产品等级A、B和C的以前的命名法设计m、mg和g。不必修改相应的现有文件。
A further product grade F (previously referred to as design f, fine) is specified in DIN 267 Part 6. This can be used, if required, for bolts, screws and nuts of up to 3 mm nominal thread diameter and takes into account the particular requirements of precision engineering.
产品等级F (以前被称为设计f,精确的）的说明见DIN 267的第6部分。在需要的情况下，产品等级F可被用于公称螺纹直径长达3毫米的螺栓、螺钉和螺母，并可将精密工程的特殊要求纳入考虑范畴。
Continued on pages 2 to 4
详见第2页到第4页。
3 Thread tolerances
3 螺纹公差
The following thread tolerances shall apply unless there are other requirements specified in the individual product standards (dimensional standards) or in the purchase order documents.
除非产品标准（尺寸标准）或订购文件中另有规定，否则则适用于下列螺纹公差。
3.1 Product grades A and B
3.1 产品等级A和B
Metric as specified in DIN 13:    tolerance quality medium (m);
DIN 13中规定的公制：        公差质量中等（m）；
                            thread engagement group N complying with DIN 13 Part 14.
                            符合DIN 13的第14部分的螺纹组N。
Tolerance classes for commercial bolts, screws and nuts shall comply with DIN 13 Part 14.
商用螺栓、螺钉和螺母的公差等级应符合DIN 13的第14部分。
Table 1
表1
Bolt 螺栓
Nut 螺母
6g1)
6H
1) 1) 6h for bolts up to and including size M 1,4.
1）6h适用于尺寸高达M1.4，且包括M1.4的螺栓。
Thread tolerances for electroplated bolts, screws and nuts shall comply with DIN 267 Part 9.
电镀螺栓、螺钉和螺母的螺纹公差应符合DIN 267的第9部分。
Thread tolerances for hot dip galvanized bolts, screws and nuts shall comply with DIN 267 Part 10.
热镀锌螺栓、螺钉和螺母的螺纹公差应符合DIN 267的第10部分。
Thread tolerances for bolts, screws and nuts made from steels with low temperature toughness or high temperature steels shall comply with DIN 2510 Part 2.
低温韧性钢或高温钢所制的螺栓、螺钉和螺母的螺纹公差应符合DIN 2510的第2部分。
Thread tolerances for the thread ends of studs:
双头螺栓螺纹末端的螺纹公差：
Sk 6 as specified in Supplement 14 to DIN 13 and DIN 14;
Sk6的说明见DIN 13和DIN 14的附录14；thread技术
Sn 4 as specified in Supplement 14 to DIN 13 and DIN 14 or (without interference fit thread = thread tolerance 6g for both thread ends) conforming to DIN 962.
Sn4的说明见DIN 13和DIN 14的附录14或（无过盈配合螺纹=两端螺纹末端的螺纹公差为6g）符合DIN 962。
Thread tolerances for tapping screws shall comply with DIN 7970.
自攻螺钉的螺纹公差应符合DIN 7970。
Thread tolerances for parts with pipe thread:
带管螺纹的零件的螺纹公差：
parallel threads shall comply with ISO 228 Part 1;
平行螺纹应符合ISO 228的第一部分；
taper external threads shall comply with DIN 3858.
斜外螺纹应符合DIN 3858。
3.2 Product grade C
3.2 产品等级C
Metric as specified in DIN 13:    tolerance quality coarse g;
DIN 13中规定的公制：        公差质量粗糙g;
thread engagement group N complying with DIN 13 Part 14.
符合DIN 13的第14部分的螺纹组N。
Table 2 表2
Bolt 螺栓
Nut 螺母
8g1)
7H
1) 1) The tolerances specified in DIN 59 130 shall be permitted for the external thread diameters.
1）DIN 59 130中规定的公差应适用于内螺纹直径。
Thread tolerances for electroplated bolts and nuts shall comply with DIN 267 Part 9.
电镀螺栓和螺母的螺纹公差应符合DIN 267的第9部分。
Thread tolerances for hot dip galvanized bolts, screws and nuts shall comply with DIN 267 Part 10.
热镀锌螺栓、螺钉和螺母的螺纹公差应符合DIN 267的第10部分。
Thread tolerances for wood screws shall comply with DIN 7998.
木螺钉的螺纹公差应符合DIN 7998。
4 Surface finish
4 表面处理
4.1 The requirements given in subclause 4.4 shall apply with regard to the surface finish of fasteners.
4.1 分条款4.4中的要求适用于紧固件的表面加工。
4.2 For coated surfaces, e.g galvanized or phosphatized surfaces, the quality of the finish shall where necessary be the subject of particular agreement, since the roughness of the surface can be significantly altered by the coating and the values specified in subclause 4.4 apply to the surface before treatment.
4.2 对于镀锌或磷酸盐化表面等涂层表面，必要时，可专门拟定特殊协议，规定表面处理的质量，因为涂层处理可大大改变表面的粗糙度，而分条款4.4中规定的数值仅适用于处理前的表面。
4.3 The parts shall first be examined visually. The test shall be carried out in accordance with DIN 4775. DIN 267 Part 19 and Part 20 shall be referred to with regard to surface discontinuities. For example in cases where there is disagreement on the results of visual examination, subclause 4.4 shall apply with respect to the surface roughness.

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