1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1992 09 08 DF00E00107002214 Released M. Paluzzi L. RumaoWP 3948-a Page 1 of 2 FLUID, TORQUE REDUCING ESF-M13P9-A11. SCOPEThe material defined by this specification is a fluid which decreasesdriving
2、torque, and variability of driving torque, of self-tapping screws.2. APPLICATIONThi s specification was originally released for material used onself-tapping thread-rolling screws in the anti-lock brake module.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Q
3、uality SystemStand ard Q-101. A mutually acceptable Control Plan as describedtherein is required for material/source approval. Appropriatestatist ical tools must be used to analyze process/product data sothat variation in the final product is continuously reduced.3.2 DRIVING TORQUE REDUCTION, min 30
4、 %Test Method: Use 40, M 4.0 x 0.7 self tapping thread-rolling screwssuch as Ford N804008 with zinc and dichromate plating such as FordS36. Coat 20 screws with the torque reducing material per themanufac turers recommendation. The other 20 are to be used aspla ted. Drive the screws into test plates
5、per section 3.3 of Fordspecification ES-21003- S100. The test plates must be clean and freeof oil or grease. Record the driving torque for each screw.Average the peak driving torque for each group of 20 screws.Deter mine the percent reduction in driving torque for the coatedsamples.3.3 SUPPLIERS RES
6、PONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.ENGINEERING MATERIAL SPECIFICATIONESF-M13P9-A1WP 3948-b Page 2 of 2 Pri or to making any change in the properties, composition,constr uction, co
7、lor, processing or labeling of the materialorig inally approved under this specification, whether or not suchchange s affect the materials ability to meet the specificationrequir ements, the Supplier shall notify Purchasing, Toxicology andthe affected Materials Engineering activity of the proposed c
8、hangesand obtain the written approval of the Materials Engineeringactivity. Test data, t est samples and a new code identification areto be submitted with the request.Substance restrictions imposed by law, regulations or Ford, apply tothe materials addressed by this document. The restrictions aredef
9、ined in Engineering Material Specification WSS-M99P9999-A1.4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresp onsible Materials Engineering activity. Suppliers desiring approvalof thei r materials shall first obtain an expression of interest from the
10、affec ted Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity a completed copy of their laboratory test reports, signed by aqualified and authorized representative of the test faci lity, demonstratingful l compli
11、ance with all the requirements of this specification (testresults, not nominal values), the material designation a nd code number, andtes t specimens for Ford evaluation. Fords engineering approval of amateri al will be based on its performance to this specification and on anassessment of suitabilit
12、y for i ntended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.5. GENERAL INFORMATIONThe information below is provided for clarification and assistance inmeeting the requirements of this specification.5.1 Th is material may be diluted for use with smaller size fasteners,exact dilution should be determined by experimentation.5.2 This material is not intended to provide corrosion protection toparts.
