M10x1 Stainless Steel Bulkhead Lock NutA stainless steel lock nut for securing M10x1 bulkhead fittings to firewalls, chassis panels, and bulkheads. Available in two hex sizes to suit different installation requirements and spanner access. The lock nut threads onto the M10x1 bulkhead fitting from the reverse side of the panel, clamping it firmly in place and preventing rotation or loosening under vibration.Variants Available Large Diameter — 17mm Hex: Provides a larger clamping face, ideal where panel thickness or load spreading is a consideration Small Diameter — 14mm Hex: Compact option for tight spaces or where a smaller footprint is preferred Product Details Thread: M10x1 Material: Stainless steel For use with: M10x1 bulkhead fittings Available in: 17mm hex (large) or 14mm hex (small) Sold individually Supplied by BRT Motorsport — brake line and fitting specialists. Fast UK dispatch.