Thread: why you need proper recovery points.

Scusa me but how do you tell hi tensile bolts from standard ones ?

The ones mounting my bullbar to the chassis have three lines like a "Y" and "BY" stamped on the end.
(oh and its not a crack above the bolt only dirt - I was concerned about that too when I saw it.)

Originally Posted by waynep

Scusa me but how do you tell hi tensile bolts from standard ones ?

The ones mounting my bullbar to the chassis have three lines like a "Y" and "BY" stamped on the end.

My guess is you have high tensile bolts as they actually have a markings on the end (someone else i'm sure will confirm what each marking means). As I understand it, the non high tensile bolts have nothing on the end at all.

Hope this helps but I would seek confirmation of this to be sure.

Aye, Mick

Thats pretty funny, stupid idiots, i wasnt expecting the bull bar to come off i was expecting the towball on then recovery vehicle to come flying off or something, they both did stupid things, all because they didnt want to get their feet wet, morons. Matt

at the 49 second mark something that looks suspisciously like a red softop 90 drives around the pack of fools and heads slowly up the beach.

Originally Posted by waynep

Scusa me but how do you tell hi tensile bolts from standard ones ?

The bolts you have are high tensile; the three radiating lines indicate this. Six radiating lines indicate Grade 8 high tensile, which are stronger still. I don't have a reference book with me now, but Brian Hejlm will know more than I do,
cheers Chazza

depending on your POV of high tensile. in my airforce world our numbers are a bitt different

the 3 bars on the face indicate 2 things

1. its an imperial bolt
2. Its a medium tensile bolt which is suitable for any bolt not specifying a required hardness

These are the only bolts i can use for anything that needs an imperial bolt If it says high tensile or specifies a tensile strenght It will wind up with 5,6 or 7 of the bars.

Metric bolts will typically have M8.8 (example only)

from memory this stands for Metric8mm.grade8

This link could be useful:
http://www.kjbolt.com.au/technical_info_03.html