M10 wing-screws (70mm length)

[Stuart91]

I'm looking for some M10 wing-screws (like in the photo below). They're for the clamps on Topdeck staging decks, to replace the standard bolts which lack grip. 

My challenge is finding anything long enough. We need 70mm of length, with at least 30mm of it threaded. 

I guess I'm onto specialist suppliers for this, the first couple I've tried haven't come up with anything suitable, does anyone have any leads?

 

[AncientLight]

Hex bolt, wing nut, spot weld?

[kgallen]

Not cheap but at least they exist (M10x70).

https://www.ebay.co.uk/itm/385138553098?hash=item59ac0bf10a:g:K8AAAOSwjQpjMwnP&amdata=enc%3AAQAIAAAA4HnTOYyDGwz9EpFK7O7rkugT4GnP%2BlM9Klhiz7PzL6zFpad3U%2BKEW%2B8TJTVus9tFMAnz9G00ZXXIJw5yFH25DTut6lvVgql2tZH81AhNQsFGQir2NrOEpZmUM62H%2BxcnFEvC%2FUEtK1z6CSoaHlUESAz4XaJsKm1AzQ5xB9AV%2FDKqplbYkLDwZ9Ek%2B22rMwjhPklwI6Br%2BOh6jvwc5oKd1Cryf52wDBmbjrIViZFpGpmbi5Sf%2BqbbJmVb1kMDa2fmZ7oyX%2FQqbHyMvmyY2j4F8ANDh%2BDqqHycDxYzy%2BP2Ain9|tkp%3ABFBM8OGwnchi

Lots of listings for M10x60 but you wanted 70mm.

[themadhippy]

Quote

Hex bolt, wing nut, spot weld?

Or  10mm stud  ,wing bolt and a welder,little bit more work but you can get whatever length you want

[Stuart91]

58 minutes ago, AncientLight said:

Hex bolt, wing nut, spot weld?

Possibly, but we need 100+ of them. We do have capacity to weld but have umpteen other projects needing attention. 

Plus since the deck is often used outdoors we'd need to paint the welds to avoid rust etc. 

[david.elsbury]

I’ve heard them as “wing bolt” if that search term helps narrow it down 

[Stuart91]

55 minutes ago, kgallen said:

Not cheap but at least they exist (M10x70).

Good to know that they are available somewhere. But you're right, that's way out of my budget. 

 

 

55 minutes ago, kgallen said:

Lots of listings for M10x60 but you wanted 70mm.

The existing bolts are 70mm, I'm tempted to try 60mm and see if we can get away with it, but I suspect there'll be situations where the lack of length is a pain. 

[Stuart91]

2 minutes ago, david.elsbury said:

I’ve heard them as “wing bolt” if that search term helps narrow it down 

Wing bolt is probably the more correct name but doesn't seem to show up much more. I've also seen "thumb screw" used as well. 

[kgallen]

Piece of M10 stud 90mm, M10 wing nut then normal (or thin) M10 nut (maybe star washer) to lock against the wing nut? A little bit Heath-Robinson but you could get all parts in A2 and it might be a 'relatively' cheap solution and fabrication "only" requires cutting the stud - would get 10 from a 1m length.

[Mixermend]

I use Westfield Fasteners in the UK for machine screws and other fixings - and I see that they do have wing screws in A2 stainless.

Again - they are a bit spendy - and only listed in 60mm length, but not too expensive if you buy 30:

https://www.westfieldfasteners.co.uk/A2_ScrewBolt_WingAme_M10.html

They are a very good company - it might be worth speaking to them to see if they have any other suggestions?

[Stuart91]

Thanks, John - I'll drop Westfield an email. Hadn't come across them before. 

I don't think I have to get them in stainless, the existing ten+ yr old bolts are standard BZP or similar and look fine. Just that if we were to weld up something ourselves, the welds would rust far quicker and it wouldn't take long before they looked unacceptable. 

[xllx]

Might be worth considering eye bolts too. They can be finger tightened like a wing bolt, but you can put a screwdriver in if you need to tighten them up a little bit more. You might have more luck finding eyes rather than wings...

Orbital fasteners have M10 x 70mm eyebolts for less than a quid each for instance

https://www.orbitalfasteners.co.uk/products/m10-forged-eyebolts-73mm-shank-14mm-eye-steel-bright-zinc-plated

 

[sunray]

17 hours ago, xllx said:

Might be worth considering eye bolts too. They can be finger tightened like a wing bolt, but you can put a screwdriver in if you need to tighten them up a little bit more. You might have more luck finding eyes rather than wings...

Orbital fasteners have M10 x 70mm eyebolts for less than a quid each for instance

https://www.orbitalfasteners.co.uk/products/m10-forged-eyebolts-73mm-shank-14mm-eye-steel-bright-zinc-plated

 

As I started reading the thread I was going to suggest the same as my local fixings company hold stock, albeit fairly limited range of lengths.

A number of my hook clamps have them now where the originals have been repurposed and I carry spares about 40-50mm.

[Yorkie]

Just found these, no idea what they're like https://www.zoro.co.uk/shop/fasteners/wing-screw/m10x70-wing-screw-round-cast-iron-bzp/p/ZT1391181X

[Stuart91]

5 minutes ago, Yorkie said:

Just found these, no idea what they're like

That looks very promising - it's the exact thing that I was looking for. 

I've used Zoro once before I think - can't remember much about it but whatever we bought turned up as promised and wasn't complete rubbish so hopefully these will be OK. 

I'll order up 20 (their minimum quantity) and report back.