1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1989 10 31 SM/ER2524TC Released J. Lines EAO FastenersA. Cockman E. Staff FastenersWP 3948-a Page 1 of 2 ADHESIVE -THREAD LOCKING, MICRO ENCAPSULATED WSS-M11P45-A11. SCOPEThis specification defines
2、the performance requirements for thread lockingadhesives which are applied to threaded parts.2. APPLICATIONThis s pecification was originally released for bolts, screws where threadlocking is required.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality S
3、ystemSt andard Q-101. A mutually acceptable Control Plan as describedthere in is required for materials/source approval. Appropriatestatist ical tools must be used to analyse process/product data sothat variation in the final product is continuously reduced.3.2 APPLICATION OF THE ADHESIVEParts will
4、be received in a coated condition. T he responsibility forapplication of the adhesive and method of application shall be thatof the parts supplier.3.3 PERFORMANCE REQUIREMENTS(WSPM WX200)The coatings when applied to ISO metric coarse threaded bolts,screws, shall ensure that the Thread Locking per fo
5、rmance requirementsconform to the Worldwide Standard Parts Manual specification WX200.The Thread Locking tests shall be carried out as specified in WX2003.4 CORROSION RESISTANCECo rrosion test requirements defined in the protective finishspe cifications shall apply after application of the thread lo
6、ckingadhesive.ENGINEERING MATERIAL SPECIFICATIONWSS-M11P45-A1WP 3948-b Page 2 of 2 3.5 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pri or to making any change in the propertie
7、s, composition,const ruction, colour, processing or labelling 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 Engi
8、neering activity of the proposed changesand 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
9、 document. The restrictions aredefined in Engineering Material Specification WS S-M99P9999-A1, unlessa dif ferent suffix (e.g. A2 or A3) is specified on the engineeringdocument for the application.4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresp on
10、sible Materials Engineering activity. Suppliers desiring approvalof thei r materials shall first obtain an expression of interest from theaffect ed Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity its own laboratory rep ort to the specification (test results, notnominal values), the material designation and code number, and testspecim ens for Ford evaluation. Upon approval, the material will be addedto the Engineering Material Approved Source List.
