GB/T 15756-2008General purpose metric screw threads - Limits of sizes (English PDF)

1 Scope

This standard is based on GB/T 193-2003 "common thread diameter and pitch Series" and GB/T 197-2003 "common thread male

Poor ", sets out common thread size limit. Ordinary screw threads - Basic type conform GB/T 192-2003 "ordinary screw threads - Basic based"

Provisions.

This standard applies to the nominal diameter of 1mm ~ 300mm, the tolerance band of 4H, 5H, 6H, 7H, 6G, 4h, 6h, 6g, 6f and 6e common

Common thread.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 192-2003 ordinary screw threads - Basic model (ISO 68-1.1998, ISO generalpurposescrewthreads-

Basicprofile-Part 1. Metricscrewthreads, MOD)

GB/T 193-2003 common thread diameter and pitch range (ISO 261.1998, ISO generalpurposemetricscrew threads-Generalplan, MOD)

GB/T 197-2003 common thread tolerance (ISO 965-1.1998, ISO generalpurposemetricscrewthreads-

Tolerances-Part 1. Principlesandbasicdata, MOD)

GB/T 14791 threads term (GB/T 14791-1993, neq ISO 5408. 1983)

3 Terms and Definitions

Terms and definitions GB/T 14791 stipulated apply to this standard.

Size Limit 4 female 4.1 internal thread diameter tolerance zone and its position shown in Figure 1.