Product Code:SAE MA1547Title:Wrenches, Twelve Spline, MetricIssuing Committee:Eg-1b Hand Tools CommitteeScope: This standard covers the design, performance, and test requirements for high strength, thin wall, commercial sockets, universal sockets, and box wrenches used for the attachment and detachment of metric spline drive, high strength, and high temperature aircraft fasteners.Inclusion of dimensional data in this standard is not intended to imply that all of the products described herein are stock production sizes. Consumers are requested to consult with manufacturers concerning lists of stock production sizes.This standard is based on, but not limited to, the following external spline wrenching system:MA1549 - Wrenching Configuration, 12 Spline, For Metric Threaded FastenersMA1586 - Wrench Configuration, 12 Spline Drive, MetricRationale: This standard covers the design, performance, and test requirements for high strength, thin wall, commercial sockets, universal sockets, and box wrenches used for the attachment and detachment of metric spline drive, high strength, and high temperature aircraft fasteners.Inclusion of dimensional data in this standard is not intended to imply that all of the products described herein are stock production sizes. Consumers are requested to consult with manufacturers concerning lists of stock production sizes.This standard is based on, but not limited to, the following external spline wrenching system:MA1549 - Wrenching Configuration, 12 Spline, For Metric Threaded FastenersMA1586 - Wrench Configuration, 12 Spline Drive, Metric