Quote:
Originally Posted by 968 GUY
For some reason commas were used instead of periods.
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Because they're German. The German convention (and, in fact, the convention in most of continental Europe) is to use commas as separators for decimal numbers. German also uses a period for the thousands separator.
For example, in the US and Great Britain we would render one-thousand point five as "1,000.5" while in German the correct convention is either "1.000,5", or "1 000,5".
Quote:
Originally Posted by Bukowski
how are the screw identifications in the PET to be interpreted? for example, here's one that I lost:
Illustration 201-03
part no. N 043 864 1
Screw
BM 3 X 6
what does the "BM" mean? I assume "3 x 6" is millimeters of the head and shaft. I have not found this style of identifier in the usual places (Fastenal, Bolt Depot, etc.), so I am lost when trying to find it in the local hardware fastener drawers.
another screw I have from the same illustration,
N 013 957 5
Tapping screws
B 3,5 X 9,5
this one has a measured thread pitch of 1.25
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https://en.wikipedia.org/wiki/ISO_metric_screw_thread#Preferred_sizes
Metric screws are given with their nominal diameter first, then length, so, for example, an M6x10 is an M6 screw or bolt that is 10mm long. You may also see something defined as "M6-1.0" which is an M6 screw with a 1.0mm pitch (the standard, "coarse" M6 pitch). Note also that the diameter is the major diameter, which is the diameter at the peaks of the threads.
A standard Metric M3.5 screw should have a pitch of 0.6mm, with a pitch of 0.35mm being the "fine" pitch option.
The "B" is likely a designation for the shape of the head.