Short Spring Back to Products Cat. No. Size Thread Pitch Thickness N-810 1/4″ (6mm) 20 1/4″ (6mm) N-811 3/8″ (10mm) 16 3/8″ (10mm) N-812 1/2″ (12mm) 13 3/8″ (10mm) N-814 5/8″ (16mm) 11 5/8″ (16mm) N-815 3/4″ (18mm) 10 3/8″ (10mm) N-818 5/16″ (8mm) 18 3/8″ (10mm) Contact us