19.8.1 Marking
In addition to the information required by the applicable legislation and specific standard the following information should be permanently and legibly marked on the shackle:
Identification mark. (If the manufacturer has not provided a unique serial number then it is the responsibility of the user to add the identification mark to identify the equipment with the inspection and examination reports).
SWL.
Grade.
Unique trade mark
Year of manufacture
In practice the grade will normally appear on the body only. It is strongly recommended by LEEA that the grade marking should appear on both the body and the pin.
The recommended positions for marking are as follows:
On the shackle body, the marks should appear on the sides of the body between the eyes and the crown. In general, no marks should be stamped on either of the eyes or the crown of the shackle although in the case of alloy steel shackles, some standards do permit the quality mark to be stamped on the crown.
On the shackle pin, the quality mark should appear on one end of the pin. In most cases, the screwed end of the pin will be most suitable, although with certain types of pin the head end will offer a larger flat surface for the mark.