Question about Neg and pos thread

darkareal · January 23rd, 2006, 23:41

I got a ICS M4, I would like to know If a silencer with Neg thread will fit on it?

A little explanation of how I can find out myself would be nice too..!

Thanks

mcguyver · January 23rd, 2006, 23:46

It's a negative thread. Otherwise known as a left-hand thread. Most of the threads you will ever use in your life will be right hand (+) and this opposite to that. The thread pitch is slightly off being a 1 thread to 1.0mm, so sometimes add-ons can be difficult to install.

darkareal · January 23rd, 2006, 23:51

Is that silencer would fit on a my gun?

mcguyver · January 24th, 2006, 00:35

It should, but like I said, sometimes they can be tough with ICS guns as they're are not exactly 14mm (-) 1.0mm thread pitch.

Brian/Ghost · September 16th, 2006, 03:04

Hey guys, used the search function to find this thread- I can't believe I'm asking this question and I'm an engineer but here goes: if I look down the barrel of the gun and to tighten a silencer/thread protecter, I turn clockwise- what kind of a thread is it? And if you could please answer using CCW/CW, left/right, negative/positive in your answer that would be great

Shameful engineer,

Brian

MadMax · September 16th, 2006, 03:40

Engineer?

The way to properly define thread twist direction is by stating it's "handedness". The definition is used in physics as well as in machinery design:

http://www.ndt-ed.org/EducationResou...eticFields.htm

To determine the handedness of a fastener, imagine gripping the threaded shaft with your four fingers with your thumb pointing out (like thumbs up) parallel to the centre axis of the shaft. If you rotate the shaft in the direction that your four fingers are pointing (i.e. fingertips forward) and your thumb is pointing in the direction that the screw threads in, then the threads match the hand that you are gripping the shaft with.

Common threads are right handed. Grip the screwdriver with your thumb pointing towards the fastener and your thumb will point down when you turn the fastener with your fingertips leading.

Left hand threads do the same if you turn the other way with your left hand.

CCW/CW/+/- are bastard definitions cobbled together by hobbyists who don't know how to specify a thread to a machinist.

+/CW = right handed
-/CCW = lefty

Guardian · September 16th, 2006, 13:21

MadMax – you are very patient. When I first read this post I thought this guy was asking the question tongue in cheek.

Brian/Ghost · September 16th, 2006, 19:27

Thanks Madmax that makes perfect sense to me now. Yeah thanks for the patience too- um yeah I was a biomed engineer- not mechanical

Anyways are you by any chance a machinist? Sounds like you know what you're talking about.

MadMax · September 17th, 2006, 01:27

Despite completing an engineering program, I managed to pick up some machining experience.

No problem with the explainations. I like to try to end the repetition of goofy definitions and poorly formulated misconceptions endemic to our hobby where I can.

Brian/Ghost · September 17th, 2006, 02:32

Humble wishes I'm sure but when you're successful let me know- I'm trying to get the US here to think in SI...

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January 23rd, 2006, 23:41	#1
darkareal Trader rating Join Date: Nov 2002 Location: Québec	Question about Neg and pos thread I got a ICS M4, I would like to know If a silencer with Neg thread will fit on it? A little explanation of how I can find out myself would be nice too..! Thanks

September 16th, 2006, 03:40	#6
MadMax Delierious Designer of Dastardly Detonations Trader rating Join Date: Dec 2001 Location: in the dark recesses of some metal chip filled machine shop	Engineer? The way to properly define thread twist direction is by stating it's "handedness". The definition is used in physics as well as in machinery design: http://www.ndt-ed.org/EducationResou...eticFields.htm To determine the handedness of a fastener, imagine gripping the threaded shaft with your four fingers with your thumb pointing out (like thumbs up) parallel to the centre axis of the shaft. If you rotate the shaft in the direction that your four fingers are pointing (i.e. fingertips forward) and your thumb is pointing in the direction that the screw threads in, then the threads match the hand that you are gripping the shaft with. Common threads are right handed. Grip the screwdriver with your thumb pointing towards the fastener and your thumb will point down when you turn the fastener with your fingertips leading. Left hand threads do the same if you turn the other way with your left hand. CCW/CW/+/- are bastard definitions cobbled together by hobbyists who don't know how to specify a thread to a machinist. +/CW = right handed -/CCW = lefty __________________ Want nearly free GBB gas?

September 16th, 2006, 13:21	#7
Guardian Trader rating Join Date: Aug 2004 Location: Ajax-Pickering (GTA)	MadMax – you are very patient. When I first read this post I thought this guy was asking the question tongue in cheek. __________________ "Sex is one of the 9 reasons for reincarnation, the other 8 are unimportant." Henry Miller Guardian’s airsoft projects @ http://www3.sympatico.ca/aftershock/

January 23rd, 2006, 23:46	#2
mcguyver Trader rating Join Date: Aug 2005 Location: Northern Alberta	It's a negative thread. Otherwise known as a left-hand thread. Most of the threads you will ever use in your life will be right hand (+) and this opposite to that. The thread pitch is slightly off being a 1 thread to 1.0mm, so sometimes add-ons can be difficult to install.

January 23rd, 2006, 23:51	#3
darkareal Trader rating Join Date: Nov 2002 Location: Québec	Is that silencer would fit on a my gun?

January 24th, 2006, 00:35	#4
mcguyver Trader rating Join Date: Aug 2005 Location: Northern Alberta	It should, but like I said, sometimes they can be tough with ICS guns as they're are not exactly 14mm (-) 1.0mm thread pitch.

September 16th, 2006, 03:04	#5
Brian/Ghost Trader rating Join Date: Oct 2005 Location: Richmond, VA (formerly Toronto, ONT)	Hey guys, used the search function to find this thread- I can't believe I'm asking this question and I'm an engineer but here goes: if I look down the barrel of the gun and to tighten a silencer/thread protecter, I turn clockwise- what kind of a thread is it? And if you could please answer using CCW/CW, left/right, negative/positive in your answer that would be great Shameful engineer, Brian

September 16th, 2006, 19:27	#8
Brian/Ghost Trader rating Join Date: Oct 2005 Location: Richmond, VA (formerly Toronto, ONT)	Thanks Madmax that makes perfect sense to me now. Yeah thanks for the patience too- um yeah I was a biomed engineer- not mechanical Anyways are you by any chance a machinist? Sounds like you know what you're talking about.

September 17th, 2006, 01:27	#9
MadMax Delierious Designer of Dastardly Detonations Trader rating Join Date: Dec 2001 Location: in the dark recesses of some metal chip filled machine shop	Despite completing an engineering program, I managed to pick up some machining experience. No problem with the explainations. I like to try to end the repetition of goofy definitions and poorly formulated misconceptions endemic to our hobby where I can. __________________ Want nearly free GBB gas?

September 17th, 2006, 02:32	#10
Brian/Ghost Trader rating Join Date: Oct 2005 Location: Richmond, VA (formerly Toronto, ONT)	Humble wishes I'm sure but when you're successful let me know- I'm trying to get the US here to think in SI...

Question about Neg and pos thread

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