1、 INTERNATIONAL TRUCK AND ENGINE CORPORATION TMS (TRUCK MATERIAL SPECIFICATION) NUMBER: TMS-4524 TITLE: Fluorocarbon Coating for Fasteners REVISION: NEW WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering DATE ISSUED: December 2007 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIF
2、IED FOR CURRENT REVISION This specification may involve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the app
3、licability of regulatory limits prior to use. Change Notice: NEW Reference: Keywords: Fastener coating; fluorocarbon; thread masking. 1.0 APPLICATION This specification covers the requirements for a protective fluoropolymer coating used on fasteners to prevent buildup or adhesion of electrodeposited
4、 primers, paints, weld spatter, etc., on the threaded sections of fasteners. This coating is suitable for internal threads of nuts and tapping plates, and external threads of bolts and studs. 2.0 SCOPE This specification covers the general coating requirements, quality, source approval and quality c
5、ontrol, packing, shipping, and identification requirements, and designation on drawings. 2.1 Restricted Chemical SubstancesEffective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the CEMS B-50 specification. 3.0 REFERENCE DOCUMEN
6、TS Unless otherwise specified, the latest issue of all referenced standards shall apply. The following standards, specifications and regulations are referenced in this specification. Quality System Standard ISO 9001 or TS-16949 CEMS B-50 INTERNATIONAL Manufacturing Standard D-13 CFR Title 29, Part 1
7、910 4.0 GENERAL REQUIREMENTS 4.1 Coating Requirements4.1.1 Coating Cure and Appearance The cure parameters for the coating shall be determined using the appropriate time/temperature relationship recommended by the manufacturer to achieve the desired performance. The cure cycle should not affect the
8、mechanical or dimensional properties of the parts being coating. 4.1.1.1 The cured coating shall be able to prevent adhesion of electrodeposited primers and shall meet the specified torque-tension requirements. This document is restricted and may not be sent outside International Truck and Engine Co
9、rporation or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2007 International Truck and Engine Corporation DECEMBER 2007 Page 1 of 3 NUMBER: TITLE: REVISION: TMS-4524 Fluorocarbon Coating for Fasteners NEW This document is re
10、stricted and may not be sent outside International Truck and Engine Corporation or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2007 International Truck and Engine Corporation 4.1.1.2 The cured coating shall be sufficiently
11、damage resistant to prevent chipping or other coating removal during normal handling and shipping of parts. 4.1.1.3 The coating shall be compatible with plant paint systems. 4.1.1.4 Coating shall have a uniform appearance and be free of tears, runs, and flaked areas. It shall have an identifiable co
12、lor (red not permissible). 4.1.1.5 Parts will be received with a light rust preventive film or dry phosphate coating to prevent flash rusting of parts during processing, shipping, and short-term plant storage. 4.1.2 Coating Coverage 4.1.2.1 The coating shall be applied to the contact surfaces of the
13、 internal thread areas of nuts and tapping plates, and the external thread areas of bolts and studs. Contact surfaces are defined as the flank surfaces of the threads. Due to processing variations, some coating may be present at the crests of the threads and in the root valleys. These areas are not
14、considered significant surfaces, provided they do not interfere with the torque-tension requirements. 4.1.2.2 Restrictions unless otherwise specified on the part drawing, coating locations and coverages shall meet the following restrictions: 4.1.2.2.1 Coating on externally threaded parts shall exten
15、d to the thread runout for shanked fasteners and to within three pitches of the head-to-shank junction on full threaded parts. In no case shall the coating extend below a plane parallel to the weld nibs. No coating may be present on the head-to-bearing surfaces of bolts and studs, nut hex flats and
16、bearing surfaces, and on the weld projection nibs, flats, and any of the head surfaces of weld studs and nuts. 4.1.2.2.2 Thickness of coating shall not be such as to interfere with free insertion of a mating fastener. 4.1.3 Initial Approval Samples for initial approval shall be accepted based on com
17、pliance to the requirements of this specification. 5.0 QUALITY All product supplied per this specification shall be clean and free from dirt, oils, sharp edges, or defects harmful to product performance. 6.0 SOURCE APPROVAL AND QUALITY CONTROL 6.1 Supplier RequirementsAll suppliers to International
18、Truck and Engine are required to be registered to ISO 9001 Quality System Requirements. International will also accept TS-16949 registration as long as the supplier can also fulfill all AIAG PPAP (Production Part Approval Process) documentation and approval requirements. Suppliers must maintain thei
19、r certification with an accredited registrar and must furnish copies of registration certificates to their International Corporate Buyer upon request. 6.2 ApprovalParts supplied against contracts or purchase orders citing this specification shall be equivalent in all respects to those samples which
20、were approved by the purchaser. No changes in formulation or processing practices are permitted without approval. In the event that changes in material, properties, processing practices, construction, color, or labeling of the product are required, the supplier shall notify Truck Development and Tec
21、hnology Center and International Purchasing and Supplier DECEMBER 2007 Page 2 of 3 NUMBER: TITLE: REVISION: TMS-4524 Fluorocarbon Coating for Fasteners NEW This document is restricted and may not be sent outside International Truck and Engine Corporation or reproduced without permission from Corpora
22、te Technical Standards. Suppliers are required to assume all patent liability. 2007 International Truck and Engine Corporation Development of the proposed change(s). Test data indicating conformance to all requirements of this specification, test samples, and new or amended or updated Material Safet
23、y Data Sheet(s) (MSDS), in accordance with CFR Title 29, Part 1910 shall be submitted with the request for change. 6.3 Process ControlThe supplier shall either perform and report results of tests on specific lots of parts produced using ISO 9001 or TS-16949 guidelines, or provide statistical evidenc
24、e of the lot having been produced in a state of statistical control and with a process capable of providing all required properties. The part supplier and the plant metallurgist and/or the quality control manager of the using International plant may determine testing and reporting requirements on sp
25、ecific products. 7.0 SHIPPING, PACKING, AND IDENTIFICATIONShipping and identification shall be in accordance with Manufacturing Standard D-13. 8.0 DESIGNATION ON DRAWINGS“Finish per TMS-4524” 9.0 TECHNICAL INFORMATION For further information related to the technical content of this specification, co
26、ntact: Suppliers may obtain controlled copies of this specification by contacting: Materials Engineering and Technology Dept. Truck Development and Technology Center 2911 Meyer Road Fort Wayne, IN 46803 E-mail: MaterialsEngineeringNav-I Information Handling Service (IHS) 15 Inverness Way East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: AutomotiveIHS.com Website: http:/ DECEMBER 2007 Page 3 of 3
