Ikhwalithi ephezulu din931 933 Bolts W. NR. hex bolt a194 2h hex bolt alloy bolt
Ibanga le-Aisi 4130 liyinsimbi ephansi yensimbi enezinto ezinjenge-chromium ne-molybdenum eyengeziwe njengama-ejenti aqinisayo ekusatshalalisweni kwayo. I-Aisi 4130 ipayipi liyamukela ngokwengeziwe ukwelashwa ngokushisa noma izindlela zomshini kunensimbi evamile yekhabhoni.
I-Alloy Steel iyinsimbi eyabiwe ngokungeza izakhi ezahlukahlukene ngenani eliphelele phakathi kwe-1.0% no-50% ukuze uthuthukise izakhiwo zalo zemishini. I-Alloy Steel ihlukaniswe izigaba ezimbili: ama-alloy aphansi kanye nama-alloy aphezulu. Umehluko phakathi kwalaba bobabili uyancipha. USmith noHashemi bachaze umehluko njengo-4.0%, kanti uDegarmo et al. kuchaze umehluko njengo-8.0%. Ngokuvamile, ibinzana elithi "insimbi ye-alloy" libhekisela kwinsimbi ephansi ye-alloy.