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QA1 metric jam nut is a heavy‑duty steel locking nut for M20‑1.5 right‑hand threads, with a 30mm hex and 10mm thickness. It serves as a thin secondary locking nut to secure large threaded assemblies where clearance is limited yet a reliable lock is required. QA1 provides jam nuts in steel or aluminum and offers standard and metric options; aluminum variants can be clear‑anodized for surface protection.
QA1 Metric Jam Nut - M20-1.5 Right Hand - 30mm Hex 10mm Wide - Steel
