Anyone know what NSHF means in the microches?

[TanisWolfbane]

For example:

BOLT, FLANGE, 6X70 (NSHF)

http://www.xrv.org.uk/media/XRV750Y.pdf

Some thing to do with stress?

[StumpyFingers]

For example:

BOLT, FLANGE, 6X70 (NSHF)

http://www.xrv.org.uk/media/XRV750Y.pdf

Some thing to do with stress?

I think it stands for Near Side Head Front.
meaning it is for the front nearside head and not the back or offside.

[YEN_POWELL]

I've searched and searched but to no avail. From what I did find I think the HF stands for hex flange (built in washer) and the NS refers to the plating or finish which is required for bolts subjected to high temperatures. But I admit I could be talking out of my rear end!!