GB/T 6560-2014Cross recessed pan head thread rolling screws (English PDF)

1 Scope

This standard specifies thread specifications for cross recessed pan head M2 ~ M10 self-rolling screws.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 90.1 Fasteners acceptance inspection

GB/T 90.2 Fasteners marking and packaging

GB/T 818 Cross recessed pan head screws

GB/T 944.1 screws with a cross groove

GB/T 1237 marking method fasteners

GB/T 3098.7 Mechanical properties of fasteners rolling screws

GB/T 3103.1 Tolerances for fasteners - Bolts, screws, studs and nuts

GB/T 5267.1 fasteners plating layer

GB/T 5267.2 fasteners non-electrolytic zinc flake coating

GB/T 5276 Fasteners Bolts, screws, studs and nuts - Symbols and designations size

GB/T 5779.1 Fasteners - Surface discontinuities - Bolts, screws and studs for general requirements

GB/T 6559 self-tapping screw locking screw coarse thread series

GB/T 16938 Fasteners Bolts, screws, studs and nuts conditions

3 Dimensions

Size code and labeling shall comply with GB/T 5276.

Screw type dimensions shown in Figure 1 and Table 1.

Screw head type size and GB/T 818 same.

When the entire system is not out of the screw thread, which can be made without threaded shank diameter equal to or smaller than the diameter of the circumscribed circle of the cylindrical or three prism (See GB/T 6559).