Click to expand Tap to zoom Square Head Bolts and Nuts Strong, aluminium 3/8 inch (1cm) long Square Headed Bolts and Nuts as used to assemble most makes of aluminium greenhouse. Save £-1.30 £1.30 SKU SQHBN010 Amazon American Express Apple Pay Diners Club Discover Google Pay Maestro Mastercard PayPal Shop Pay Union Pay Visa