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EddieM
well exactly, if you go for A2 (304) or A4 (316) roughly, you know what your getting (if BS standard), if you buy cheap mild steel, who knows.
screws, screws and more screws!
- Thread starter Glenbirnie
- Start date
well exactly, if you go for A2 (304) or A4 (316) roughly, you know what your getting (if BS standard), if you buy cheap mild steel, who knows.
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This is true. It does not, however, mean an A2 screw is harder than a normal screw. It very much depends on the screw, and good quality hardened screws make A2 look soft. A4 is probably as hard as the majority of non-stainless screws, though.
Cheap 'A2' screws from places like eBay, and unspecified stainless screws from, well, who knows where, could be made of anything. They're usually not much better than brass, they bend and break easily.
On the other hand, a 12,9 bolt is hard enough to move into HRC instead of HRB, and A4 may as well be plastic in comparison.
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EddieM
TBH i agree with what you say, buy quality, not carp!! I will still always use good quality stainless screws.
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Personally, I use the Turbogold screws from Screwfix, usually. They're decent, don't rust easily. The goldscrews are.. alright. Light work, dry conditions only. I'm using them up in wall plugs.
As for their quicksilver ones.. won't buy 'em. They're soft ****, especially the pan heads. Round out if you look at them funny.
I also tend to use Ulti-Mate screws, just chuck the bit they come with in the bin, too brittle.
Good screws are worth the money, but things like Spax and Reisser are far too expensive for most jobs. Then again, Turbogolds are almost as expensive as Reisser right now.
Think I just did.
As for their quicksilver ones.. won't buy 'em. They're soft ****, especially the pan heads. Round out if you look at them funny.
I also tend to use Ulti-Mate screws, just chuck the bit they come with in the bin, too brittle.
Good screws are worth the money, but things like Spax and Reisser are far too expensive for most jobs. Then again, Turbogolds are almost as expensive as Reisser right now.
Think I just did.
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EddieM
of course, as i said before, screws are a small part of the cost, it pays to know not all screws are equal. I agree with the quick silver ones though they aren't too good are they
Turbogold then?
hardened steel with a (passivated zinc?) anti-corrosion coating.
And A2 stainless for outside, perhaps upsized a bit for a bigger head to resist stripping, or a pilot to drive it easier (but I most recently used stainless coach bolts and the hex head was fine, though not cheap)
hardened steel with a (passivated zinc?) anti-corrosion coating.
And A2 stainless for outside, perhaps upsized a bit for a bigger head to resist stripping, or a pilot to drive it easier (but I most recently used stainless coach bolts and the hex head was fine, though not cheap)
Turbogold's a good general purpose screw, yes.
Upsizing to resist stripping is counter-productive: Even if you go up enough to get a PZ3 head, the torque requirement will be increased and as such, you're more likely to twist, snap, or round out the screw. Driving A2 screws at speed requires a softer bit.
Upsizing to resist stripping is counter-productive: Even if you go up enough to get a PZ3 head, the torque requirement will be increased and as such, you're more likely to twist, snap, or round out the screw. Driving A2 screws at speed requires a softer bit.
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EddieM
Or a stainless bit.
Can't say I've seen a bit made of stainless steel before.
Modern screws are hardened and have optimised profiles, as well as self drilling tips. That combined with power tools makes for easy driving in softwood without a pilot hole, but there's a limit as to how far you can go with that before something gives.
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EddieM
Now, as soon as they make those available in the rest of the world without simply changing the dollar sign into something else..
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EddieM
bad link, commonly available in the UK
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