Stainless Steel Screws.

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Brucey
Posts: 35897
Joined: 4 Jan 2012, 6:25pm

Re: Stainless Steel Screws.

Postby Brucey » 2 Sep 2019, 9:12pm

alexnharvey wrote:Check the bolt size carefully, stem bolts are sometimes m7 which I think you will have to order from a specialist bike supplier.


yes but M7x1 screws are rarely (never?) found in sets of four on a faceplate; they more often travel in pairs only.

OP's stem looks to have M5x0.8mm screws in it. If these are like ones I have seen before then they will

a) have a head diameter that is smaller than is normal for an M5 caphead (so screwfix etc capheads won't fit unless modified)
b) be of 10.9 persuasion (thus any common stainless or titanium screw would be a step down in strength) and
c) have a built in captive washer under the head. This will again be of a non-standard diameter and
d) the screw will go rusty rather easily; first in the socket presumably because the plating is thinnest here.

They will probably also have a maker's mark in the bottom of the socket; in lieu of standardised marking this allows the screws (and their strength grade) to be identified. You can see the maker's mark in the photo below; the cable pinch bolt at the end of one arm is so marked ('K'), and so are the boss bolts ('T').

Image

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~

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Tilley
Posts: 108
Joined: 19 Jun 2016, 4:54pm
Location: Nailsea

Re: Stainless Steel Screws.

Postby Tilley » 2 Sep 2019, 9:57pm

in my neck of the woods I wold us these guys:
http://www.fixingsupplies.co.uk/
The M4 and M5 stainless steel cheese head machine screws would be what you are looking for.

Brucey
Posts: 35897
Joined: 4 Jan 2012, 6:25pm

Re: Stainless Steel Screws.

Postby Brucey » 2 Sep 2019, 10:02pm

cheesehead screws? On a stem faceplate? Hmmmmm…….

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~

rmurphy195
Posts: 1424
Joined: 20 May 2011, 11:23am
Location: South Birmingham

Re: Stainless Steel Screws.

Postby rmurphy195 » 3 Sep 2019, 8:02am

Samuel D wrote:I have used Westfield Fasteners on the recommendation of 531colin of this forum and was pleased with the the whole transaction. Works well for small orders. Plenty of metric bolts.


Lots of choice and lots of info on that one thanks
Brompton, Condor Heritage, creaky joints and thinning white (formerly grey) hair
""You know you're getting old when it's easier to ride a bike than to get on and off it" - quote from observant jogger !

NewHorizon
Posts: 409
Joined: 14 Mar 2007, 10:10am
Location: The Marches

Re: Stainless Steel Screws.

Postby NewHorizon » 3 Sep 2019, 3:04pm

I've used Kays Fasteners via ebay quite a lot - good range, happy to ship small quantities and no corrosion problems at all with their A4 bolts on my bike.
www.ebay.co.uk/str/kaysfasteners