coach bolt


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carriage bolt

carriage bolts
A threaded bolt having a circular head, an oval or flat bearing surface, and a means (such as a square shoulder under the head) of preventing rotation of the bolt.
References in periodicals archive ?
Also, exchange the screws on standard hinges with security screws, or replace the hinges with strap hinges, also secured with coach bolts.
The bolt lying by the side of the fishplate in Walsall is not actually from it and are what are called coach bolts from a different part of the railway.
Outside, door hinges should be secured with coach bolts or non-return screws.
Instead, police say, they should use quality padlocks and replace standard hinges with strap hinges secured by coach bolts or non-return screws.
4 Use screws or coach bolts to fix the post to the decking joist (once decking boards and handrail are added it becomes very secure).
On existing hinges, use coach bolts or security screws.
He said outbuildings should be fitted with at least one heavy duty padlock, strong hinges and coach bolts through the door and frame.
Use strong coach bolts or nonreturn screws to secure door hinges and try to fit close shackle padlocks.
Please consider the following: put all tools and equipment away, and lock up expensive items in a more secure place; secure items to strong anchoring points with chains; postcode your property; replace standard hinges with strap hinges secured by coach bolts, and on existing hinges, use coach bolts or security bolts or screws - these are dome-headed and, therefore, make it difficult to unscrew these fittings.