This spring plunger is in stainless steel. Body in stainless steel X8CrNiS18.9 = 1.4305 (AISI 303), bead in stainless steel X46Cr13 = 1.4034 (AISI 420), polished. Spring in spring stainless steel X10CrNi18.8 = 1.4310 (AISI 302).
During our manufacturing process, spring resistance is controlled by electronic and optical measurement devices.

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