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QA1 metric jam nut is a low‑height steel locking nut for M8‑1.0 left‑hand threads, featuring a 13mm hex and 4mm thickness. It secures assemblies as a secondary, thin locking fastener where clearance is limited. QA1 supplies jam nuts in steel or aluminum and supports both standard and metric sizes; select aluminum parts can be finished with clear anodizing for a treated surface.
QA1 Metric Jam Nut - M8-1.0 Left Hand - 13mm Hex 4mm Wide - Steel
