Message Forums

Hi, Suggest  you try a caravan shop rather than hardware because I suspect they would be some sort of high tensile steel.  Am sure one of the experts/engineers on here will let you know

DaveS1

DaveS1 is quite right. Some of the bolts that harware shops stock are sometimes made from mild steel and what happens is when you tighten the nuts and bolts the thread stretches slightly. Ideal for DIY in the home but you need high tensile steel bolts for this application therefore you need to purchase the required nuts and bolts from either a caravan outlet or a company that stocks fastening equipment to the engineering trade. I have been an engineer for the past 35 years in the tool and fabrication industry.

If you have a vernier caliper which is a precise measuring instrument, you could check the diameter of the two hole sizes in the stabiliser, you would know what size bolts you need then.

If you purchase the nuts and bolts from a caravan outlet they will packaged up but if you go to a fastening stockists you could take the stabiliser with you and get them to try the size you need. They sell them individually so there is no packaging to undo and guaranteed to obtain the correct size.