Yes but those are  Amphenol connectors.   Many "good looking" connectors  we buy today have really poor plating and poor machining tolerances.   Thus all "look alike" connectors aren't the same.   10 in a bag for $10..........no thank you.

73

Bob, K4TAX


On 5/1/2019 1:32 PM, Michael Blake via Elecraft wrote:
I agree with your process Chuck. I have never read an Amphenol document that 
suggests anything other than hand tight.

Since the barrel is knurled and has no flats for a wrench it seems certain that 
a wrench was not what the designer had in mind.

73 - Mike - K9JRI



On May 1, 2019, at 2:19 PM, hawley, charles j jr <c-haw...@illinois.edu> wrote:

I don’t tighten pl259s with pliers. I wiggle the plug so it sets into the 
mating grooves while tightening it with my fingers and never had them get 
loose. I think that’s where folks go wrong...when the plug doesn’t set into the 
grooves. I almost need pliers to remove the plug when disconnecting it. At 
least 60 years so far this works...

Chuck Jack
KE9UW

Sent from my iPhone, cjack

On May 1, 2019, at 11:46 AM, Jim Brown <j...@audiosystemsgroup.com> wrote:

On 5/1/2019 9:08 AM, Ron Durie wrote:
Tightening inside PL259's with pliers is not desirable, because each Hams
definition of "SNUG" occurs at different Torque levels.
I want to use my hands to screw them on and off.
You may like that, but mother nature likes them tight. And she always wins.
  Also, when you have SO239 chassis mounted "Round" connectors (using one
large lock washer), then pliers will loosen them every time.
I'd call that equipment junk.

73, Jim K9YC

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