[AT] Russian Metric uses BSPP

[bloomis at charter.net]

Metric motors, i.e. Euro manufacture use those odd metric/BSP threads on the
peckerheads. ABB, heck, I can't even remember who all the makers are.
Fortunately McMaster sells cord grips for the motors. Otherwise it's a hack
job. And most metric motors don't wire with rigid conduit or flex fittings
anyway, multiconductor flex cable so the cord grips are OK. McMaster sells
the multiconductor wire as well. It actually is easy as pie if it in a
installation where it isn't going to be an issue. Just 10 more things to
have around. Just look at Baldor or ABB for metric motors. It's a whole new
world. All in KW not HP. 
Bradford


-----Original Message-----
From: AT <at-bounces at lists.antique-tractor.com> On Behalf Of James Peck

Automation Direct sells low price electrical components. I recently saw BSP
threaded conduit connectors and cord grips offered for sale in the US. I do
not like this. 

6 types of hydraulic threads
https://www.parker.com/literature/Tube%20Fittings%20Division/Four-Easy-Steps
-to-Identifying-Hydraulic-Treads.pdf

SAE inch straight threads
NPT inch tapered thread

BSPP British inch straight thread
BSPT British inch tapered threads

Metric straight thread
Metric tapered threads

Tapered fittings seal by thread interference. Straight threads seal by the o
ring.