This spring plunger, is in steel. Body in steel strength class 5.8, black oxide finish. Bead in steel hardened and polished, spring in spring steel class D.
During our manufacturing process, spring resistance is controlled by electronic and optical measurement devices.
Product also available in stainless steel

Spring plunger, regular force
| D | D1 | L | H | S | Spring force | Reference | Pack | ||
| initial F1(approx. N) | final F2(approx. N) | ||||||||
| M6 | 3,5 | 15 | 1 | 3 | 9 | 13 | 9766 | 2 | 25 pcs |
| M8 | 5 | 18 | 1,5 | 4 | 15 | 30 | 9767 | 4 | 25 pcs |
| M10 | 6 | 23 | 2 | 5 | 20 | 35 | 9768 | 8 | 25 pcs |
| M12 | 8 | 26 | 2,5 | 6 | 30 | 55 | 9769 | 12 | 10 pcs |
| M16 | 10 | 33 | 3,5 | 8 | 65 | 125 | 9770 | 31 | 10 pcs |
| M20 | 12 | 43 | 4,5 | 10 | 80 | 160 | 9771 | 64 | 5 pcs |
| M24 | 15 | 48 | 5,5 | 12 | 90 | 180 | 9772 | 100 | 5 pcs |