GB/T 2-2016 in English

《GB/T 2-2016紧固件 外螺纹零件末端》由TC85（全国紧固件标准化技术委员会）归口，主管部门为中国机械工业联合会。

GB/T 2-2016 Fasteners - Ends of parts with external thread

1 Scope

This standard specifies the types and dimensions of ends of parts with external thread (e.g. bolt, screw and stud ends) recommended for use.

This standard is applicable to standardized or non-standardized parts with external thread.

For each end type, a symbol is specified and it is intended that these symbols be used when specifying one of the ends for threaded fasteners.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 78 Hexagon socket set screws with cone point (GB/T 78-2007, ISO 4027:2003, MOD)
GB/T 5276 Fasteners - Bolts, screws, studs and nuts - Symbols and descriptions of dimensions (GB/T 5276-2015, ISO 225:2010, MOD)

3 Dimensions

3.1 General

The types and dimensions of ends are shown in Figures 1 and 2 and Tables 1 to 4.

Symbols and descriptions of dimensions are specified in GB/T 5276.

3.2 Ends which are included in the nominal length of the fastener

Foreword I
1 Scope
2 Normative references
3 Dimensions