McKechnie and Omega Closed as a result of the NZ Govt Covid19 decision to move the country to Level 4 status.

We will reopen on April 23rd, 2020

As most of you will be aware the New Zealand Government moved the country to a Level 3 crisis status on Monday March 23rd and to Level 4 at midnight on Wednesday 25th March 2020.

This means that along with most businesses, we will be closing down from 2.30 pm on Wednesday 25th of March, 2020 for a period of four weeks. At this stage we will look to re-open on Thursday the 23rd of April 2020.

Welcome to our New Zealand customers Dismiss

Diameter Width and Depth

Diameter Width and Depth Tolerances for Class A Hollow Shapes 

all dimesions in millimetres unless specified - tighter tolerances available on request

Note: For a rectangular hollow as shown in the diagram, the tolerances are determined as follows:
(a) The tolerance for the width, A, is the value in Column 3 for a dimension equal to the depth B.
(b) The tolerance for the depth, B, is the value in Column 3 for a dimension equal to the width A.