1、This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. APRIL 2016 Page 1 of 4 NAVISTAR, INC. Material, Parts, and Process Specifications
2、(MPAPS) NUMBER: MPAPS- G-4108 Former Designation: TMS-4108) TITLE: Screws, Corrosion Resistant CURRENT REV No.: 1604 DATE: April 2016 WRITTEN/EDITED BY: W. Cook APPROVED BY: R. Goluch SUPERSEDES: C-1 Sept. 2000 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specification
3、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 applicability of regulatory limits prior to use
4、. Change Notice: Released as MPAPS and Editorial Changes 1.0 APPLICATION This specification covers three types of coatings applied to standard stainless steel fasteners used in the exterior and interior of vehicles. Included are the machine, thread forming, and thread cutting screws specified in Int
5、ernational Standard Parts or screws made from material equivalent to 410 stainless steel. Options for a bright finish (chrome plate), black finish (black oxide), and joint sealing (wax), which may be required singly or in combination for specific applications are provided. 2.0 SCOPE This specificati
6、on covers processing and property requirements for the three options, quality, corrosion resistance, source approval and quality control, and shipping and identification requirements. 2.1 Restricted Chemical Substances Effective January 1, 2007, all product supplied to the requirements of this speci
7、fication must comply with the requirements of the MPAPS B-50 specification. 3.0 REFERENCE DOCUMENTS 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 Stand
8、ard ISO 9001 or TS-16949 ASTM A 219 CFR Title 29, Part 1910 ASTM B 368 NAVISTAR Manufacturing Std. MS-D-13 NAVISTAR Engineering Design Std. A-16 NAVISTAR MPAPS B-50 NUMBER: MPAPS G-4108 TITLE: Screws, Corrosion Resistant REVISION: 1604 This document is restricted and may not be sent outside Navistar
9、, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. APRIL 2016 Page 2 of 4 4.0 REQUIREMENTS 4.1 Processing 4.1.1 Option A Bright Chrome Plate (Note: This coating applies to designs previously specif
10、ying TMS-1030 with wax coating omitted.) Plating Minimum Thickness (2) microns inch Copper (1) - - Bright Nickel (3) 10.16 0.0004 Chromium (4) 0.26 0.000010 (1) Copper may be used under the bright nickel, but the thickness of the copper layer shall not be substituted for any of the required layers.
11、(2) Plating thickness shall be determined using ASTM A 219. The thickness is measured on significant visible surfaces and threads, holes and recesses are excluded. (3) Bright nickel is defined as a nickel electrodeposit containing 0.04% min sulfur. (4) Conventional chromium. 4.1.2 Option B: Black Ox
12、ide Coating (Note: This coating is applicable to designs previously specifying TMS-4001.) 4.1.2.1 Coating Process The coating shall be applied after all forming, machining, or heat treatment operations have been performed. Parts shall be rinsed in warm water at 60-90C (140-190F) before coating. The
13、coating shall be applied from an alkaline oxidizing bath under controlled time (15-30 minutes) and temperature 120-130C (250-265F) conditions. Parts shall be rinsed in cold water. Equipment including solutions or baths shall be properly maintained and free from dirt and other contamination. 4.1.2.2
14、Color The coating shall be a uniform, adherent black color, and the base metal shall be completely covered. There shall be no evidence of a reddish-brown or green smut when wiped with a clean, dry white cloth. Coated parts showing smut shall be reprocessed. 4.2 Stress Relief All cold formed parts or
15、 those containing residual stresses from machining shall be stress relieved at 220-230C (425-450F) for one hour. 4.3 Cleaning Prior to the coating operation parts shall be cleaned. The cleaned surfaces shall be free from rust, scale, grease, oil, paint, or any other foreign material which will inter
16、fere with the coating adherence or color. The cleaning shall be performed without abrading, eroding, or otherwise cold working the surface. 4.4 Preservative Unless otherwise specified parts shall be dipped in a light engine oil after coating. 4.4.1 Option C: Wax Note: This option is applicable to ob
17、solete designs specifying TMS-1030 with chrome plating omitted. 4.4.2 Coating Thread Cutting Screws A compounded or thermoplastic self-sealing wax material completely resistant to moisture shall be applied to 50-75% of the thread length. The applied coating shall not exceed the diameter of the head
18、of the fastener. The coating shall be Bi-Wax or equivalent, and it shall be applied to thread cutting type screws only. NUMBER: MPAPS G-4108 TITLE: Screws, Corrosion Resistant REVISION: 1604 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from
19、Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. APRIL 2016 Page 3 of 4 4.5 Corrosion Resistance Chrome plated and black oxide coated parts shall be tested for 24 hours in a CASS (fog) test (ASTM B-368). A light blush or patina shall be per
20、missible on significant surfaces if it can be removed by polishing. Use a soft cloth wetted with a dilute suspension of pumice or extra fine tripoli (250 mesh or finer), rinse in warm water and dry with a soft cloth. No visible evidence of corrosion shall be permitted on the polished surface. Thread
21、s, slots, recesses, and holes shall be excluded unless specifically required on the engineering drawing. 5.0 QUALITY Fasteners shall have a uniform coating. Coating shall be adherent and uniform in luster, color, or thickness depending on the option. 6.0 QUALIFICATION Engineering qualification of so
22、urces is required in advance of production shipments. Samples shall be accompanied by test data certifying that all requirements of the specification have been met. 6.1 Quality Control Plan A Quality Control Plan for products supplied to the requirements of this specification will be established by
23、mutual agreement between NAVISTAR and the supplier. Unless specific exception is noted, the following characteristics, where applicable*, shall be included in the plan as features for management by statistical process control.* * Other characteristics for inclusion in the control plan may be specifi
24、ed on the engineering drawing and/or purchase order. * See NAVISTAR Engineering Design Standard A-16 7.0 SOURCE APPROVAL AND QUALITY CONTROL 7.1 Supplier Requirements All suppliers to NAVISTAR are required to be registered to ISO 9001 Quality System Requirements. NAVISTAR will also accept TS-16949 r
25、egistration as long as the supplier can also fulfill all AIAG PPAP (Production Part Approval Process) documentation and approval requirements. Suppliers must maintain their certification with an accredited registrar and must furnish copies of registration certificates to their Corporate Buyer upon r
26、equest. 7.2 Approval Parts supplied against contracts or purchase orders citing this specification shall be equivalent in all respects to those samples which were approved by the purchaser. No changes in formulation or processing practices are permitted without approval. In the event that changes in
27、 material, properties, processing practices, construction, color, or labeling of the product are required, the supplier shall notify NAVISTAR Materials Engineering and Purchasing and Supplier Development of the proposed change(s). Test data indicating conformance to all requirements of this specific
28、ation, test samples, and new or amended or updated Material Safety Data Sheet(s) (MSDS), in accordance with CFR Title 29, Part 1910 shall be submitted with the request for change. NUMBER: MPAPS G-4108 TITLE: Screws, Corrosion Resistant REVISION: 1604 This document is restricted and may not be sent o
29、utside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. APRIL 2016 Page 4 of 4 7.3 Process Control The supplier shall either perform and report results of tests on specific lots of parts
30、produced using ISO 9001 or TS-16949 guidelines, or provide statistical evidence 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 quality control manager of the using NAVISTAR plant may determi
31、ne testing and reporting requirements on specific products. 8.0 SHIPPING AND HANDLING Shipping and identification shall be in accordance with NAVISTAR Manufacturing Standard MS-D-13. Parts shall be packaged so as to avoid any damage in shipment detrimental to the appearance of the part. 9.0 DESIGNAT
32、ION ON DRAWINGS Example of note to use on drawings: Finish: MPAPS G-4108, Option A Finish: MPAPS G-4108, Options B and C 10.0 TECHNICAL INFORMATION For further information related to the technical content of this specification, contact: Suppliers may purchase controlled copies of this specification by contacting: Materials Engineering and Technology Dept. 10400 W. North Avenue Melrose Park, IL 60160 E-mail: MaterialsEngineeringN IHS Global Inc. 15 Inverness Way East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: AutomotiveIHS.com Website: http:/
