Ibakala lokuchaneka kothotho lwe-TXR (isitokhwe esisemgangathweni sohlobo lwe-sleeve yebhola ye-nut screw) zisekelwe kwi-C5, Ct7 kunye ne-Ct10 (JIS B 1192-3). Ngokwebakala lokuchaneka, ukudlala kwe-Axial 0.005 (Ukulayishwa kwangaphambili: C5), 0.02 (Ct7) kunye ne-0.05mm okanye ngaphantsi (Ct10) kwi-stock. Uchungechunge lwe-TXR (Isitokhwe esiqhelekileyo sohlobo lwe-Sleeve ye-sleeve yebhola ye-screw) ye-screw shaft screw material S55C (induction hardening), imathiriyeli ye-nut SCM415H (i-carburizing kunye nokuqina), ubulukhuni bomphezulu bendawo ye-screw yebhola yi-HRC58 okanye ngaphezulu.