Zeron 100 FG-spec heavy hex nuts are super duplex stainless steel heavy hex nuts (UNS S32760) supplied as the structural companion to FG stud bolts. Nuts ship in the SA supply state by metallurgical necessity (hot-forged then SA + tapped), but the heat lot is cherry-picked to meet the higher-end FG mechanical envelope, matching the joint's stud-bolt yield and ensuring the heavy-hex nut develops full A1082 stud yield without thread strip-out. Hardness ≤ 28 HRC NACE-controlled.
FG-spec = SA-condition nut from heat lots cherry-picked for FG-grade mechanical envelope · Companion to FG stud bolts
Standards: ASME B18.2.2 + ASME B18.2.4.6M + ASTM A1082 + ASTM F606 + NACE MR0175 + NORSOK M-650 + M-630 MDS 055.
FG cornerstone · All heavy hex nut supply states · Stud-bolt companion: FG stud bolts. RFQ: info@torqbolt.com / +91-22-66157017 / WhatsApp.
