BS EN 2894:2018 specifies the characteristics of self-locking bihexagonal nuts, with counterbore, in heat resisting nickel base alloy, passivated, MoS2 lubricated.Cross References:ISO 4095EN 2424ISO 5855-2EN 2491EN 2952ISO 5858ISO 8788EN 2516EN 9100EN 9133All current amendments available at time of purchase are included with the purchase of this document.