High tensile refers to the strength within the bolt. High tensile are the strongest bolts available and are identified by 3 (grade 5) or 6 (grade 8) slots on the head of the bolt for imperial sizes and 8.8 or 10.9 or 12.9 stamped on the head for metric bolts. The higher the grade or number the higher the strength.

The length of a bolt is taken from underneath the head to the end of the bolt. Counter-sunk type bolts are taken as an overall measurement. The thickness is measured by taking the diameter of the shank of the bolt.

There is a number on the top of the bolt.

We can supply regular link galvanised chain or gold high tensile transport chain cut to your specified length and all the hooks, turnbuckles, links and accessories needed to get the job done.

You need a cutoff wheel that has ‘INOX’ on it. These are available in various sizes and thickness. These can also be used to cut normal steel applications.

Tap magic is a great product to use when drilling constantly. It keeps the drill bit cool so it won’t distort and become blunt.

You need to refer to the tapping drill chart supplied at the Bolt Barn to accurately drill the correct size hole

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In most applications, the plain shank nail should be 2 to 3 times longer than the timber being held.

We stock timberdeck nails that are designed with a slightly domed head to ensure the perimeter of the nail just penetrates the timber and therefore eliminates any protusion which may affect foot traffic. You may need to pre-drill approx. 1/3 less that the nail diameter when nailing into hardwood. Timberdeck nails are available in galvanised or stainless steel.

We stock rivets in steel, aluminium, stainless steel and Monel (Nickel/Copper).

We have found that your local council is the best guide as this may vary between councils.

You need to know how many ‘runs’ you intend to do, their measurements and the spacings. Also, are you using timber or steel posts? And what type of fittings do you need? We can help with all of that.