Loop End Clock Mainsprings (2.7 mm to 8.7 mm height)

2.70 x .18 x 520 open loop 2.70 x .20 x 540 open loop 3.00 x .20 x 450 open loop 3.00 x .20 x 525 open loop 3.00 x .22 x 450 open loop 3.00 x .23 x 360 open loop 3.00 x .25 x 560 open loop 3.00 x .30 x 650 open loop 3.00 x .35 x 550 open loop 3.50 x .20 x 630 open loop 3.50 x .23 x 520 open loop 3.50 x .25 x 670 open loop 3.75 x .20 x 630 open loop 4.00 x .23 x 600 open loop 4.00 x .25 x 500 open loop 4.00 x .30 x 700 open loop 4.00 x .32 x 900 open loop 4.20 x .30 x 650 open loop 4.50 x .23 x 550 open loop 4.50 x .25 x 700 open loop 4.50 x .30 x 750 open loop 4.70 x .40 x 600 open loop 4.80 x .41 x 1350 open loop 5.00 x .25 x 550 open loop 5.00 x .27 x 650 open loop 5.00 x .30 x 650 open loop 5.00 x .30 x 800 open loop 5.00 x .30 x 1800 open loop 5.00 x .32 x 1000 open loop 5.00 x .35 x 525 open loop 5.00 x .35 x 650 open loop 5.00 x .40 x 800 open loop 5.00 x .45 x 575 open loop 5.50 x .25 x 600 open loop 5.50 x .36 x 680 open loop 5.60 x .43 x 750 open loop 5.85 x .25 x 820 open loop 6.00 x .20 x 750 open loop 6.00 x .25 x 600 open loop 6.00 x .30 x 700 open loop 6.00 x .30 x 1050 open loop 6.00 x .35 x 1800 open loop 6.25 x .40 x 1300 open loop 6.40 x .33 x 600 open loop 6.50 x .17 x 500 open loop 6.50 x .27 x 650 open loop 6.75 x .30 x 1680 open loop 7.00 x .22 x 1500 open loop 7.00 x .25 x 730 open loop 7.00 x .26 x 1500 open loop 7.00 x .30 x 750 riveted loop 7.00 x .30 x 1000 open loop 7.00 x .30 x 1200 open loop 7.00 x .35 x 1000 open loop 7.00 x .43 x 1200 open loop 7.00 x .45 x 900 open loop 7.50 x .30 x 1200 open loop 7.50 x .30 x 1500 open loop 7.50 x .32 x 900 open loop 7.50 x .35 x 1000 open loop 7.50 x .38 x 1100 open loop 7.50 x .40 x 700 open loop 7.50 x .40 x 1000 open loop 7.50 x .40 x 1200 open loop 7.50 x .45 x 1200 open loop 7.50 x .50 x 1200 open loop 7.50 x .50 x 2025 riveted loop 7.80 x .40 x 700 open loop 7.80 x .50 x 1200 open loop 8.00 x .20 x 630 open loop 8.00 x .22 x 450 open loop 8.00 x .23 x 900 open loop 8.00 x .25 x 700 open loop 8.00 x .27 x 750 open loop 8.00 x .30 x 770 open loop 8.00 x .35 x 900 open loop 8.00 x .38 x 1050 riveted loop 8.00 x .40 x 900 open loop 8.00 x .40 x 1350 open loop 8.00 x .40 x 1800 open loop 8.00 x .41 x 1620 riveted loop 8.00 x .42 x 1050 open loop 8.00 x .45 x 1400 open loop 8.50 x .25 x 750 open loop 8.50 x .30 x 750 open loop 8.50 x .35 x 1000 open loop 8.70 x .31 x 1350 open loop 8.70 x .38 x 1000 open loop Height x Strength x Length (mm)