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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: Gio on January 05, 2021, 03:56:28 PM

Title: Anyone know of a 3.5mm bolt on a K75?
Post by: Gio on January 05, 2021, 03:56:28 PM

Apologies in advance for the left-field question ... am in temporary need of a 3.5mm bolt (0.5mm pitch) in order to work on cam chain tensioner on an '84 Honda ATC (Big Red). This was a common size on older metric indicators for example, but I no longer have any. I removed one from the rear K75 indicator but unfortunately it is the coarse thread plastic screw type, and sold my Moto Guzzi (and all spare parts) last year. Smallest metric I can find locally is 4mm.

So for a bonus point - does anyone know of a reasonably accessible bolt of said descript that might be temporarily pilfered ... approx. 1" or longer ..?

Wishing all a better new year!

Gio

Title: Re: Anyone know of a 3.5mm bolt on a K75?
Post by: volador on January 08, 2021, 02:16:53 PM

You're going cannibal on 'Buttercup'?

Title: Re: Anyone know of a 3.5mm bolt on a K75?
Post by: Gio on January 08, 2021, 04:52:39 PM

Only temporarily (should such a bolt exist) ... would only be needed for a few minutes and then returned to donor with thanks! I used to have a box of all kinds of turn signals etc and am sure there must have been one in there somewhere ... so, as the saying goes - never throw anything out - and think twice about giving it away (unless in a good cause, which it was) ...

Title: Re: Anyone know of a 3.5mm bolt on a K75?
Post by: warmshed on January 15, 2021, 11:03:17 AM

These are used to fit electrical socket to the backing box in UK

Title: Re: Anyone know of a 3.5mm bolt on a K75?
Post by: Gio on January 15, 2021, 03:59:56 PM

Thanks warmshed ... I'm from the UK originally, but not familiar with the "backing box" ..?

Title: Re: Anyone know of a 3.5mm bolt on a K75?
Post by: warmshed on January 15, 2021, 04:39:11 PM

The light switches and power sockets in domestic and industrial buildings are fixed to the wall normally by 2 x3.5mm threaded screws. The wiring in the buildings terminate in metal or plastic boxes that the switch or socket are fixed by the 3.5 mm screws.  It originated from the change to metric.  They used to be fixed with a BA 4? thread but they changed to 3.5 mm as they more or less fitted the old Ba thread and were inter interchangeable in this situation

Title: Re: Anyone know of a 3.5mm bolt on a K75?
Post by: warmshed on January 15, 2021, 04:57:52 PM

How quick do you need one or many, I can post you a dozen or so but don't know how long it will take.  PM me if you would like some now or for future use.

Title: Re: Anyone know of a 3.5mm bolt on a K75?
Post by: warmshed on January 15, 2021, 05:04:04 PM

Just checked it would take 6 to 8 days to send a letter to you with the screws inside, I can add screws up to the weight limit, PM me your address and Ill send them tomorow.  Dave

Title: Re: Anyone know of a 3.5mm bolt on a K75?
Post by: Gio on January 15, 2021, 05:35:47 PM

A most generous offer sir ... only need one and no rush as it's a winter job ... will PM shortly

Cheers!

Title: Re: Anyone know of a 3.5mm bolt on a K75?
Post by: Laitch on January 16, 2021, 08:32:21 AM

Quote from: Gio on January 15, 2021, 03:59:56 PM

I'm from the UK originally, but not familiar with the "backing box" ..?

They're called junction boxes in the USA.