BS ISO 6787:2018,Assembly tools for screws and nuts – Adjustable wrenches.BS ISO 6787:2018 pdf free download here.The size is 1.01M.
This third edition cancels and replaces the second edition (ISO 6787: 2001),which has been technically
revised. The main changes compared to the previous edition are as follows:
—the reference number from ISO 1703: 2005 has been updated;
—the values for test mandrel width across flats and torque values in Table 2 have been updated;
—a footnote in Table 2 with reference to ISO 1711-1: 2016 has been added (moved from Clause 6).
BS ISO 6787:2018 specifies the dimensions of adjustable wrenches and the admissible clearance of the adjustable jaw. It also specifies test conditions to test the suitability of tool performance.
2 Normative references
ISO 1711-1, Assembly tools for screws and nuts – Technical specifications-Part 1: Hand-operated wrenches and sockets.
5 Technical specifications
5.1 Clearance of adjustable jaw
The clearance, c, between the adjustable jaw and the fixed jaw shall be measured in accordance with Figure 2 by application of a low force at the jaw.
The clearance shall not exceed the maximum values for the specified sizes given in Table 1, irrespective of which side is to be checked.
The adjustable jaw shall be manufactured to permit free travel throughout the range of opening without binding or wedging.