The nuts are made of solid brass coated with tin (they are non-magnetic).
Terminal Nuts (4) Hornby, Hammant & Morgan compatible. Brass Nuts. Pack of Four
Oo Gauge Kit built Accessories-washers - Battery Boxes - Brass Nuts Ect Job Lot
⭐ x2 NEW Replacement HORNBY DUBLO Brass Nuts for OO Gauge 3 Rail Track etc NEW
25 Brass Railway Paychecks Paycheques
Set of 25 Brass Calendar 100 yrs Collectible Gift For Decoration