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"We have a huge range of vehicles at our dealership. Passenger vehicles, commercial trucks to tractors, mowers and agricultural implements. We always need bolts and other products to supply and service these and Bolt Barn have always got what we want." - Jason Coram, Service Manager, James Frizelles Automotive Group, Lismore NSW.
Open Monday - Friday, Open Saturdays
Screws, Studs, Taps, Turnbuckles
Stainless Steel, Steel
Automotive, Galvanised, High Tensile, Imperial, Industrial, Low Tensile, Metric
Balesterd wire and fittings Lismore, Bolts and nuts Lismore, Fasteners Lismore, Chain and lifting equipment Lismore, Nails, Screws, Drilling and Tapping, Rivets, Millwawkee Power Lismore, Tools Lismore
High tensile refers to the strength within the bolt. Hig 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 high 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. Countersunk type bolts are taken as an overall measurement. Then thickness is measured by taking the diameter of the shank of the bolt.
There is a number on the top.