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. 2015 by Navistar, Inc. JUNE 2015 Page 1 of 4 NAVISTAR, INC. Material, Parts, and Process Specifications
2、(MPAPS) NUMBER: MPAPS S-EM-39.101-GS/PL Former Designation: ESP-EM-39.101-GS TITLE: Tab Weld Nuts Metric Series CURRENT REV No.: 1506 DATE: June 2015 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: ESP-EM-39.101-GS - September 2000 PRINTED COPIES OF THIS DOCUM
3、ENT MUST BE VERIFIED 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
4、determine the applicability of regulatory limits prior to use. Change Notice: Changed to New MPAPS format; Combined GS, GI, PP. 1.0 GENERAL: Implementation of this standard must be in accordance with the policies and procedures outlined in MPAPS S-A-0.101. There may also be supplemental group instru
5、ctions in regard to use of metric standards that should be taken into account. The sizes and tolerance ranges used were established in an effort to enable the use of commercially available items, dimensionally interchangeable, worldwide. This specification contains dimensions and tolerances as suppl
6、ied by vendors. Inch dimensioned standard tab weld nuts may be found in MPAPS S-E-39.101-GS/PL. 2.0 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 DESIGN
7、CONSIDERATION: Coarse thread series only will be considered as part of this standard, because of the following advantages: Less tendency to cross thread. Resists nicking and has less stress concentration at the thread roots. Less likely to be seriously affected by decarburization and oversize minor
8、diameter of internal threads. 4.0 METRIC-INCH RELATED SIZES: During the inch to metric design transition period, the following chart of related sizes can be used for reference. This information is not to be considered as a recommendation for substitutions but only as a means of determining approxima
9、te dimensional equivalents. Metric Series Approximate mm Inch Series 3.5 #5 4 #6, #8 5 #10 6 1/4 8 5/16 10 3/8, 7/16 NUMBER: MPAPS S-EM-39.101-GS/PL TITLE: Tab Weld Nuts REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corpor
10、ate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 2 of 4 5.0 THREAD: The ISO basic profile is essentially the same geometric configuration as the unified screw thread basic form. The threads will be coarse series, tolerance class 6g
11、(Ext). 6.0 THREAD TOLERANCES: The ISO medium class of fit 6H(Int)/6g(Ext) is approximately the same as the 2A(Ext)/2B(Int) allowance in the U.S. unified thread series for comparable size. For example: Thread Allowance M10 x 1.5 - 6H(Int)/6g(Ext) 0.032 mm (.00126 in) 3/8-16 UNC 2A(Ext)/2B(Int) .0013
12、in (0.033 mm) 7.0 METHOD OF DESIGNATION: Tab weld nuts will be designated by size, style, word description, material and part number as shown: M6, Style 4M, Tab Weld Nut, Steel, Part Number. The absence of a specification for pitch indicates that coarse thread is required; e.g., a coarse thread of t
13、he dimensions M6 x 1 is designated as “M6.“ 8.0 MATERIAL: Steel (STL), low carbon, AISI 1008 or 1010 or equivalent. Tensile Strength: 415 MPa Yield Point: 207 MPa Shear Strength: 207 MPa Elongation: 50.8 mm - 30% max. 9.0 FINISH: Copper (COP). A flash deposit to provide-corrosion resistance during s
14、hipment and temporary storage. 10.0 THREADS: Thread form diameters and associated pitches are in accordance with ISO recommendations. Threads will be made to the tolerances for the medium class of fit (6H - internal threads) as shown in ISO 965/II, General Purpose Metric Screw Threads. 11.0 COLOR CO
15、DING: Not recommended, except in cases where adequate insurance is needed to prevent mixing of “metric parts“ with look-alike “inch parts.“ The color blue is standard identifier used in some industries. This must be handled internally at individual plants where needed and is meant to be supplemental
16、 to the normal finish and easily deleted when the need for supplemental identification no longer exists. The supplemental blue color should not be used on material such as stainless steel which is specified for cosmetic purposes, or phosphate coating which may cause a loss of color identity. 12.0 DI
17、MENSIONS OF DIFFERENT STYLES: NUMBER: MPAPS S-EM-39.101-GS/PL TITLE: Tab Weld Nuts REVISION: 1506 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. 2015 by
18、 Navistar, Inc. JUNE 2015 Page 3 of 4 Dimensions in millimeters: STYLE 1M Nominal Size A B C D E H Rec Hole in Plate, Nom Width Length Thickness Pilot Thickness Pilot Diameter Pilot C/L to End Max Min Max Min Max Min Max Min Max Min Max Min M 3.5 X 0.6 11.4 10.8 16.4 15.5 2.5 2.3 1.1 0.7 5 4.4 5.2 4
19、.3 5.2 M 4 X 0.7 11.4 10.8 16.4 15.5 2.5 2.3 1.1 0.7 5.4 4.9 5.2 4.3 5.6 M 5 X 0.8 11.4 10.8 16.4 15.5 2.5 2.3 1.1 0.7 6.2 5.6 5.2 4.3 6.4 M 6 X 1 13.4 12.4 21 20.1 3.1 2.6 1.5 1.1 7.8 7.2 6.8 6 8 M 8 X 1.25 16.4 15.6 29 28.1 3.8 3.3 2.3 1.9 9.4 8.8 9.1 8.3 9.6 M10 X 1.5 16.4 15.6 29 28.1 3.8 3.3 2.
20、7 2.3 11.4 10.8 9.1 8.3 12 Dimensions in millimeters: STYLE 2M Nominal Size A B C D E Rec Hole in Plate, Nom Width Length Thickness Pilot Pilot Thickness Diameter Max Min Max Min Max Min Max Min Max Min M 3.5 X 0.6 11.4 10.8 16.4 15.5 2.5 2.3 1.1 0.7 5 4.4 5.2 M 4 X 0.7 11.4 10.8 16.4 15.5 2.5 2.3 1
21、.1 0.7 5.4 4.9 5.6 M 5 X 0.8 11.4 10.8 16.4 15.5 2.5 2.3 1.1 0.7 6.2 5.6 6.4 M 6 X 1 13.4 12.4 21 20.1 3.1 2.6 1.5 1.1 7.8 7.2 8 M 8 X 1.25 16.4 15.6 29 28.2 3.8 3.3 2.3 1.9 9.4 8.8 9.6 M10 X 1.5 16.4 15.6 29 28.2 3.8 3.3 2.7 2.3 11.4 10.8 12 Dimensions in millimeters: STYLE 3M Nominal Size A B C D
22、E F G H Rec Hole in Plate, Nom Width Length Thickness Pilot Pilot ProJ. Proj. Pilot C/L Thickness Diameter Height Diameter to End Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min M 3.5 X 0.6 11.4 10.8 16.4 15.5 2.5 2.3 1.1 0.7 5 4.4 0.56 0.45 4.9 4.6 5.2 4.3 5.2 M 4 X 0.7 11.4 10.8 16
23、.4 15.5 2.5 2.3 1.1 0.7 5.4 4.9 0.56 0.45 4.9 4.6 5.2 4.3 5.6 M 5 X 0.8 11.4 10.8 16.4 15.5 2.5 2.3 1.1 0.7 6.2 5.6 0.56 0.45 4.9 4.6 5.2 4.3 6.4 M 6 X 1 13.4 12.4 21 20.1 3.1 2.6 1.5 1.1 7.8 7.2 0.72 0.58 5.7 5.4 6.8 6.2 8 M 8 X 1.25 16.4 15.6 29 28.1 3.8 3.3 2.3 1.9 9.4 8.8 0.82 0.71 8 7.6 9.1 8.3
24、 9.6 M10 X 1.5 16.4 15.6 29 28.1 3.8 3.3 2.7 2.3 11.4 10.8 0.82 0.71 8 7.6 9.1 8.3 12 Dimensions in millimeters: STYLE 4M Nominal Size A B C D E F G Rec Hole in Plate, Nom Width Length Thickness Pilot Thickness Pilot Diameter Proj. Height Proj. Diameter Max Min Max Min Max Min Max Min Max Min Max Mi
25、n Max Min M 3.5 X 0.6 9.9 9.3 16.4 15.5 2.5 2.3 1.1 0.7 5 4.4 0.56 0.45 4.9 4.6 5.2 M 4 X 0.7 9.9 9.3 16.4 15.5 2.5 2.3 1.1 0.7 5.4 4.9 0.56 0.45 4.9 4.6 5.6 M 5 X 0.8 9.9 9.3 16.4 15.5 2.5 2.3 1.1 0.7 6.2 5.6 0.56 0.45 4.9 4.6 6.4 M 6 X 1 13.4 12.4 21 20.1 3.1 2.6 1.5 1.1 7.8 7.2 0.72 0.58 5.7 5.4
26、8 M 8 X 1.25 16.4 15.6 25.8 24.6 3.6 3.3 2.3 1.9 9.4 8.8 0.82 0.71 8 7.6 9.6 M10 X 1.5 16.4 15.6 25.8 24.6 3.6 3.3 2.7 2.3 11.4 10.8 0.82 0.71 8 7.6 12 NUMBER: MPAPS S-EM-39.101-GS/PL TITLE: Tab Weld Nuts REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reprod
27、uced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 4 of 4 STYLE 5M Dimensions in millimeters: Nominal Size A B C D E H J Rec Hole in Plate, Nom Width Length Thickness Pilot Thickness Pilot Diameter
28、Pilot C/L to End Target Diameter Max Min Max Min Max Min Max Min Max Min Max Min Max Min M 3.5 X 0.6 9.9 9.3 18.4 17.6 2.5 2.3 1.1 0.7 5 4.4 5.2 4.3 6.7 6 5.2 M 4 X 0.7 9.9 9.3 18.4 17.6 2.5 2.3 1.1 0.7 5.4 4.9 5.2 4.3 6.7 6 5.6 M 5 X 0.8 11.4 10.8 20.4 19.6 2.5 2.3 1.1 0.7 6.2 5.6 5.2 4.3 7.5 6.7 6
29、.4 M 6 X 1 11.4 10.8 24.4 23.6 2.5 2.3 1.5 1.1 7.8 7.2 6.8 6.2 7.5 6.7 8 M 8 X 1.25 11.4 10.8 28.4 27.6 3.3 3.1 2.3 1.9 9.4 8.8 9.1 8.3 7.5 6.7 9.6 13.0 PART LIST: 13.1 Approved: 14.0 TECHNICAL INFORMATION: For further information related to the technical content of this specification, contact: Supp
30、liers 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:/ Nominal Size Style Material Part Number M4 2M STL 31179R1 M5 2M STL 31205R1 M6 1M STL 31218R1 M8 1M STL 30710R1 M8 5M STL 40377R1
