Wanted - antique coach screws

[dom]

I'm fixing up the iron work on some old chapel doors and I'm looking for coach screws with an antique appearance - ideally square head rather than hex - and blackened or unplated. Anyone suggest a source?

Prob need around 50, daimeter not critical M5 orM6 or whatever that is in old money 3/16"-1/4", around 25mm / 1" long - but again not critical.

[Steve Firth]

[Chris Bacon]

Is that wise? Are you fastening hinges?

[owdman]

They're fairly widely available try googling 'square head coach screws'. You can 'antique' them by heating in a fire and leaving them to rust a bit.

cheers Jacob

[meow2222]

periodproperty.co.uk sell medieval style screws, though not cheap. Its worth noting that such things are used way out of character more often than not.

NT

[dom]

Thanks for the tips - no, the coach screws aren't being used to hang the doors, just the decorative hinges (original) and door hardware.

[The Medway Handyman]

Try

[Rob Morley]

are bright zinc - I think you can darken zinc with phosphoric acid, then protect it with something like wax or WD40.

[Andy Dingley]

Any acid works - even vinegar. If you're going to blacken them, it just needs to be roughened.

Liberon do a good black wax for steelwork. Not weatherproof though.

If I'm doing black iron for rough / outdoor use, I heat it with a blowtorch and wipe it with used sump oil. I'd also leave the zinc on in this case.