Definitely a Hardy Spicer thing on the drive shafts and drive couplings we used in production and not a general Sanderson/Claas/Cat fittingThose fasteners pictured definitely look more like bi-hex? Same profile as most aviation fasteners. Hard to differentiate on a picture like that I suppose though.
"Male" headed triple square fasteners are reasonably rare... wouldn't be unlike a manufacturer like CAT to use them then.
Definitely a Hardy Spicer thing on the drive shafts and drive couplings we used in production and not a general Sanderson/Claas/Cat fitting
I was surprised to find that the 3/8" UNF HT bolts holding the UJ saddles on my JCB propshafts are 12 point.
Now a standard Imperial 3/8 12 point socket seems to fit OK but IS this correct or is the profile of the points something special ? They need quite a high torque so I don't want to round off the heads !
Tending to work on older stuff this is actually the first time I've had to work on 12 point bolt heads !
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The Snap-On parasite left one of the 'special offer' leaflets the other day (they're never brave enough to hand it out in person) There's a thirteen piece socket set, three extensions, small breaker bar and a ratchet for £560+vat - but you do get a free Snap-On winter hat, 'worth' £40..... I've got a genuine Ushanka I swapped a 24hr rat-pack for, much better than the Snap-On polyester thing, it does unsettle the former eastern bloc valeters though....Bargain
Just acquired something similar and couldn't place what it was for... Now I know. Guy was landy nuts so makes sense.
I'm sure I have something like that in my toolbox from my Land Rovering days, although it's not made by Snap on, probably Laser tools.