Choose a barrel bolt length to match the door or gate weight: 75-100 mm bolts suit light interior doors and cupboards, while 150-300 mm heavy bolts suit sheds, gates and double doors. A wider barrel and longer shoot bolt give more holding strength. Make sure the bolt reaches well into a keep or socket for a secure engagement.

Yes, galvanised bolts and latches are suitable for outdoor gates because the zinc coating resists rust and weathering. Hot-dip galvanised or stainless steel is best for permanently exposed gates and coastal areas, while black japanned or self-colour bolts are better kept for dry interior doors. Add a little oil to pivots and shoots to keep the action smooth.

Fit a barrel bolt by screwing the barrel to the door or gate so the shoot bolt lines up with the keep or socket on the frame, then check it slides freely. Mount gate latches at a comfortable height on the closing stile with the catch or keeper on the post. Drill pilot holes and use the supplied or matching galvanised screws into solid timber.

Many bolts and latches can be locked with a padlock, including padbolts, hasp-and-staple sets and locking gate latches with a hole or eye for the shackle. Padbolts combine a sliding bolt with a lockable staple, making them ideal for sheds, side gates and outbuildings. For higher security, choose a bolt with a hardened staple and a close-shackle padlock.