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 6 NAVISTAR, INC. Material, Parts, and Process Specifications
2、(MPAPS) NUMBER: MPAPS- FT-9548 Former Designation: TMS-9548 TITLE: Assembly and Testing Procedures for Clinch Studs and Nuts CURRENT REV No.: 1604 DATE: April 2016 WRITTEN/EDITED BY: W. Cook APPROVED BY: R. Goluch SUPERSEDES: Rev. 1102 Feb. 2011 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR C
3、URRENT 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 applicabilit
4、y of regulatory limits prior to use. Change Notice: Released as MPAPS, editorial changes 1.0 APPLICATION This specification is applicable to all clinch type studs and nuts whose engineering drawings reference this specification for assembly and/or testing procedures and/or KCC requirements. 2.0 SCOP
5、E This specification covers the assembly and testing procedures for clinch studs and nuts. A quality plan and KCC values are included. Minimum values for the push-out force and unsupported torsional resistance for specific parts are shown on the engineering drawing for each NAVISTAR part number. 2.1
6、 Restricted Chemical Substances Effective January 1, 2007, all product supplied to the requirements of this specification 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. T
7、he following specifications, standards, and regulations are referenced in this specification: Quality System Standard ISO 9001 or TS-16949 CFR Title 29, Part 1910 NAVISTAR Manufacturing Standard MS-D-13 MPAPS B-50 NAVISTAR Eng. Design Standard A-16 4.0 REQUIREMENTS 4.1 Assembly Procedure Proper asse
8、mbly of clinch type studs and nuts requires a lower backing die to support the workpiece and insure that the stud or nut is straight and centered in the hole. The upper insertion die or punch must be aligned perpendicular to the workpiece and centered over the hole and lower backing die. When the st
9、aking force is applied to the upper punch or insertion tool/die, the direction of the force should be perpendicular to the workpiece and lower backing die. The upper punch/die must be of a size to fully cover the clinch type nut or stud. The assembly procedure is tested and verified by the performan
10、ce of torsional and push out tests. The clinch stud or nut is twisted off (torsional test) or pushed out of the workpiece. NUMBER: MPAPS FT-9548 TITLE: Assembly and Testing Procedures for Clinch Studs and Nuts REVISION: 1604 This document is restricted and may not be sent outside Navistar, Inc. or r
11、eproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. APRIL 2016 Page 2 of 6 4.1.1 Example An example of a clinch nut-installation tool is shown in Figure 1. Examples of test fixtures for the performance of the
12、unsupported torsional load test and the push-out tests for studs and nuts are shown in Figures 2 through 5. Figure 1: Typical Installation Tool (An optional installation tool is shown in Figure 6 on Page 6) 4.2 Test Procedure Each clinch type stud and nut part number, material, and material thicknes
13、s combination shall be tested to verify the installation tooling and assembly procedure for that part number and material thickness combination. Sufficient testing shall be performed to fully define and establish control limits for those process parameters affecting the performance/strength of the c
14、linch joint. Periodic testing during each production run shall be performed as required to demonstrate that the assembly process is both in-control and capable. Insertion Punch or Die. Nut Punch Max Diameter. Clinch Nut Lower Backing Die. Workpiece/Engagement Material. Clinch Nut. Thread Minor Diame
15、ter. Punch diameter should be approximately equal to the nut width or diameter. Nut body diameter/width diameter/width. Clinch nut height. 20 Ref NUMBER: MPAPS FT-9548 TITLE: Assembly and Testing Procedures for Clinch Studs and Nuts REVISION: 1604 This document is restricted and may not be sent outs
16、ide 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 3 of 6 4.2.1 Unsupported Torsional Tests The clinch type stud or nut and plate assembly is secured and a fixture capab
17、le of applying a torsional load to the nut or stud is attached. Torque is applied perpendicular to the axis of the nut or stud until the part spins loose in the workpiece. Fracture should occur primarily through the base metal of the workpiece. Figure 2: Nut Torsion Test Figure 3: Stud Torsion Test
18、Clinch type nut. Workpiece/engagement material. Torsional load fixture Torsional load fixture. Clinch type stud. Workpiece/engagement material. Support fixture. NUMBER: MPAPS FT-9548 TITLE: Assembly and Testing Procedures for Clinch Studs and Nuts REVISION: 1604 This document is restricted and may n
19、ot 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 4 of 6 4.2.2 Push-Out Test The clinch type stud or nut and plate assembly is secured in a support fixtu
20、re which allows the stud or nut to be pushed out of the plate. The push-out force is applied directly to the top of the stud. The push-out force is applied to the nut through its internal threads by applying the force to the top of a bolt of the appropriate thread type and size. Fracture should occu
21、r primarily through the base metal of the workpiece. Push out force. Clinch type nut. Workpiece. Support fixture. Figure 5: Stud Push-Out Test Figure 4: Nut Push-Out Test Bolt Push out force Clinch type nut Workpiece Support fixture NUMBER: MPAPS FT-9548 TITLE: Assembly and Testing Procedures for Cl
22、inch Studs and Nuts REVISION: 1604 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 5 of 6 5.0 QUALITY Parts shall
23、be delivered to NAVISTAR facilities in a clean and dry condition ready for use without further conditioning or cleaning. 5.1 Quality Control Plan A Quality Control Plan for this product will be established by mutual agreement between NAVISTAR and the supplier. Each clinch type stud and nut part numb
24、er, material, and material thickness combination shall be included in the control plan. The following items, where applicable,* will be included in the control plan as features for management by statistical process control.* 1. Push-Out Force 2. Torsional Test * Additional characteristics for inclus
25、ion in the control plan may be specified on the engineering drawing and/or purchase order. * See NAVISTAR Engineering Design Standard A-16. 6.0 SOURCE APPROVAL AND QUALITY CONTROL 6.1 Supplier Requirements All suppliers to NAVISTAR are required to be registered to ISO 9001 Quality System Requirement
26、s. NAVISTAR 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 their certification with an accredited registrar and must furnish copies of registration certi
27、ficates to their Corporate Buyer upon request. 6.2 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
28、 approval. In the event that changes in material, properties, processing practices, construction, color, or labeling of the product are required, the supplier shall notify NAVISTAR Fastener Engineering and Purchasing and Supplier Development of the proposed change(s). Test data indicating conformanc
29、e to all requirements of this specification, 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. 6.3 Process Control The supplier shall either perform and report results of tests
30、on specific lots of parts 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 plant metallurgist and/or the quality
31、 control manager of the using NAVISTAR plant may determine testing and reporting requirements on specific products. 7.0 SHIPPING, PACKING AND IDENTIFICATION Shipping, packing and identification shall be in accordance with Manufacturing Std. MS-D-13. 8.0 DESIGNATION ON DRAWINGS The drawing will utili
32、ze the KCC symbol with a note: “Completed assemblies will comply with requirements of MPAPS FT-9548”. NUMBER: MPAPS FT-9548 TITLE: Assembly and Testing Procedures for Clinch Studs and Nuts REVISION: 1604 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without per
33、mission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. APRIL 2016 Page 6 of 6 9.0 TECHNICAL INFORMATION For further information related to the technical content of this specification, contact: Suppliers may purchase controlled copies
34、 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:/ A.0 GENERAL INFORM
35、ATION Figure 6: Optional Installation Tool Insertion Punch or Die. Clinch Nut. Thread Minor Diameter. Punch diameter should be approximately equal to the nut width or diameter ddiameter. Clinch nut height. NUT SIZE A REF. B REF. C REF. D REF. M4 .125 #8 .128 #10 .143 M5 .160 .750 M6 .191 1/4 .194 5/16 .250 M8 .259 3/8 .305 M10 .327 7/16 .358 .564 .134 1.250 M12 .395 1/2 .415 M14 .464 9/16 .470 .269 .290 .328 .407 .507 .604 .683 .060 .090 C A B D 3.0 REF.
