DIN-267-6-紧固件-产品等级F.doc

Fasteners
紧固件
Product grade F
产品等级F
DIN
267
Part 6
第6部分
Mechanische Verbindungselemente; technische Lieferbedingungen, Ausführungen und Maßgenauigkeit für Produktklasse F
产品等级F紧固件；发货技术条件；设计和尺寸精确度
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。
Dimensions in mm
尺寸单位毫米

1 Scope and field of application
1 适用范围和领域
This standard specifies tolerances for product grade F screws, bolts and nuts with thread diameters from 1 to 3 mm.
本标准详细说明了产品等级F的螺纹直径为1-3毫米的螺丝、螺钉和螺母的公差。
It is recommended that this standard should also be used for non-standardized fasteners.
本标准同样适用于非标准化的紧固件。
Product grade F generally refers to the quality of products for which stringent requirements are made with respect to tolerances (e.g. in precision mechanics).
产品等级F泛指根据产品质量所制定的严格公差要求（如在精确的技工中）。

2 Thread diameters
2 螺纹直径

Table 1
表1
Thread diameter
螺纹直径
Tolerance 1) 公差1)
Internal thread
内螺纹
(nuts)
(螺母）
External thread
外螺纹
(bo1ts and screws)
(螺钉和螺丝）
≥1 ≤1.4
5H
4h
>1.4 ≤3
6H
6g
1) Plated threads shall not infringe the maximum material limit with zero fundamental deviation.
1）电镀螺纹不得违反零度基本偏差的最大材料限制。

3 Thread lengths
3 螺纹长度

P = pitch of thread
P=螺距

4 Nominal lengths
4 公称长度

Continued on pages 2 to 5.
详见第2页到第5页。

5 Driving geometry
5 驱动几何体
5.1 Widths across flats and widths across corners
5.1 平面的宽度和角度的宽度

The specified tolerances for widths across flats and the minimum widths across corners apply to fasteners where the height of hexagons, m’, is equal to 0,7 m or more:
本标准的平面宽度和最小角度宽度公差适用于高度不少于0.7米的六角螺母的紧固件。

5.2 Slots
5.2 插槽

Table 2
表2
Slot width, n
插槽宽度,n
Nominal value
公称值
Tolerance
公差
<0.3
C11
≥0.3 <0.4
C12
≥0.4
C13

6 Head heights
6 螺头高度
6.1 Head diameters
6.1 螺头直径

Table 3
表3
Thread diameter
螺纹直径
Tolerance on D 直径公差
Slotted cheese head screws
开槽圆柱头螺钉
Cross recessed pan head screws
十字槽盘头螺钉
≥1 ≤1.4
h12
h13
>1.4 ≤3
h13
h13

Table 4
表4
Thread diameter
螺纹直径
Tolerance on D2)
直径公差2)
≥1 ≤1.4
h10
>1.4 <2
h12
≥2 ≤3
h13
2) For tolerance on circularity of countersunk cross recessed head screws, see figure 9 in table 6.
2）十字槽沉头螺钉的圆度公差，参见表6中的图9.

6.2 Head heights
6.2 螺头高度

Table 5
表5
Head height
(nominal value)
螺头高度
（公称值）
Tolerance on k
Slotted cheese head screws
开槽圆柱头螺钉
Cross recessed pan head screws
十字槽盘头螺钉
≤0.8
h11
h12
>0.8 <1.2
h12
h13
≥1.2
h13

7 Thickness of nuts
7. 螺母厚度

8 Shank diameters
8 柄径

The shank diameter is approximately equal to the pitch diameter.
柄径约等于中径。

9 Geometrical tolerances
9 形位公差
Table 6
表6
Figure No
图号
Feature
图像
Tolerance based on dimension
尺寸公差
1

S
2

D
3

d
4

d
5

d
6

d
7

d
8

d
9

d
10

d
11

d
12

S
13

14

15

16

Explanatory notes
注释
This standard has been prepared by Normenausschuß Feinmechanik und Optik (Precision Mechanics and Optics Standards Committee).
本标准由精密技工和光学标准委员会制备。