250004 - Nut, 1/2" UNF, Metal Locking type Land-Rover Series 2 and 2a £3.00 exc. Quantity: at £3.00 each Out of Stock Out of stock. 0 in your basket View Basket Checkout Nut, 1/2" UNF, Metal Locking type All metal locking type, not nylon locking. Similar to Aerotite nut. Used to secure windscreen to bulkhead at pivots.