need slightly longer screw

gunsmoker

gunsmoker

Joined
Oct 16, 2024
Messages
274
Location
Cumming, Georgia USA
Bike
2007 ST-1300
2025 Miles
002770
I'm mounting a switch and a USB charging port on my bike.
I'm going to attach these things to a flat piece of stainless steel which I want to screw down above the clutch master cylinder reservoir,

so I need slightly longer versions of this screw.
So does anybody have any suggestions?

PS does anybody know the exact thread pitch for this factory screw?


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SCREW, FLAT (4X12) (90158-MT7-000) | MotoSport

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They show 4x12, so I'm guessing M4, 12mm long. An Ace hardware or a Menards would be my recommendation to find a suitable longer replacement locally. :biggrin:
 
I bought a few of these from Ace Hardware, and a couple stainless steel nuts also.
(I will use the nuts as dies to clean up the damaged threads if I have to cut one of these screws to a custom length.)

We will see if they are the right thread pitch.
I'm going to try to install them later tonight.

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I don't have a pitch gauge but when I have a Q about a fastener I take one of the fasteners in question to the hardware store and use their gauge to determine size and pitch.
 
Those are coarse thread, should be correct. No reason for them to be fine thread, that's the standard M4 thread pitch.

I would get allen head bolts if you're fixing things to the reservoir, for one they just look better and secondly you can get a little more torque on them without damaging anything.
 
I have been working on my bike for over two weeks and not ridden it other than pushing it back and forward a couple feet at a time in the garage!
So I wanted to get this done, to ride a couple hours on Friday for a long lunch break and then again Saturday when I go to the Christian Motorcyclists Association breakfast meeting.

I'm glad Ace Hardware had the right screws .70 mm is the right spacing on the threads.
And 16mm length was perfect for my application. No trimming needed.
 
Pics.... give me a few days to see how I like these new switches, because I don't wanna post a pic of a "beta version" -- not if I'm going to come up with a new and improved version soon.
 
I've found most of the hardware I need at one of our local ACE hardware stores, as mentioned before. An alternative would be online order from McMaster-Carr pr Grainger. They both have an impressive selection of all manner of hardware.
 
pics of the flat piece of sheet metal that is now screwed across the top of my clutch fluid cover and extends out to the left side for mounting a switch that is now controlling a completely independent second set of turn signals. (all new wiring, supplemental to the factory wiring harness.)

I'm going to take this sheet metal off and re-bend it within the next few weeks to get the switch in a better position where there's less intrusion of its image in my left side mirror.
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The amber turn signals came in a set of four for only something like $18. I'm only using two of them mounted through the plastic sides of my top box /trunk.

They're not very bright, but they're OK-- acceptable. PS: When they aren't blinking they don't look yellow or amber; they look smoke gray in color when the power is off.

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