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 6 NAVISTAR, INC. Material, Parts, and Process Specifications (
2、MPAPS) NUMBER: MPAPS S-B-30.101-GS/PL Former Designation: ESP-B-30.101-GS TITLE: Weld Studs English Series - Not Recommended (Noun Code 0810) CURRENT REV No.: 1506 DATE: June 2015 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: ESP-B-30.101-GS - August 2006 PR
3、INTED COPIES OF THIS DOCUMENT 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 an
4、d health practices and to determine the applicability of regulatory limits prior to use. Change Notice: Changed to New MPAPS format; Combined GS, PP. 1.0 CONTENTS: Page Head 1 Welding Surface and Projections 1 Threads 1 Thread Length 2 Length Tolerance 2 Points 2 Material 2 Finish 2 Restricted Chemi
5、cal Substances 2 Policy for Selecting Parts for New Design 2 Type U3 Projection Weld Studs 3 Type T3 Projection Weld Studs 4 Spade Spot Weld Studs 5 Technical Information 6 2.0 HEAD: The bearing surface of the head will be at right angles to the axis of the shank within 2 degrees. 3.0 WELDING SURFAC
6、E AND PROJECTIONS: Welding surface will be flat and parallel to plane formed by the tops of embossments to provide intimate contact with welding electrode and application of equal force on all projections. The surface will have three integrally formed hemispheroidal shaped weld projections equally s
7、paced on a locating circle concentric with the shank. 4.0 THREADS: Unified Series Class 2A limits will apply to plain finish or unplated studs and to plated studs before plating. NUMBER: MPAPS S-B-30.101-GS/PL TITLE: Weld Studs REVISION: 1506 This document is restricted and may not be sent outside N
8、avistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 2 of 6 5.0 THREAD LENGTH: On studs 2 inches and shorter, full formed threads will extend to within two threads of the projec
9、tions (under head), or closer if practicable. Studs over 2 inches will have a full-formed thread length of 1-3/4 inches. 6.0 LENGTH TOLERANCE: Nominal Stud Length Tolerance on Length Thru 1 Inch + .000 - .031 Over 1 Inch to 2 Inches + .000 - .062 Over 2 Inches + .000 - .094 7.0 POINTS: Weld studs ar
10、e normally furnished with plain sheared ends. Header points are obtainable having standard dimensions shown in MPAPS S-C-1.101-GS/PL. 8.0 MATERIAL: Weldable grade of low carbon steel. 9.0 FINISH: Weld studs are not normally plated due to objectionable effects of certain plating on the welding proces
11、s; however, where requirements dictate, studs may be zinc or copper plated. As designated by part number, studs will be furnished plain or plated in accordance with complete MPAPS and class listed below: Zinc Trivalent, Class 6A (ZN6A) MPAPS G-20, Class 6A. Proper precautions in regard to toxic fume
12、s being generated during welding should be exercised. 10.0 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. 11.0 POLICY FOR SELECTING PARTS FOR NEW DESIGN: Appr
13、oved parts are so designated to reduce variety of parts and assure maximum availability, interchangeability and cost savings in volume buying. For new design, parts shall be selected from “Approved“ part list only. Head Style: U3 (Projection Under Head) Threads: Coarse Lengths: Nominal Size Minimum
14、Length Maximum Length # 8 #10 1/4 5/16 3/8 1/2 1/4 1/4 3/8 1/2 5/8 1 1-1/4 1-1/2 2 2-3/4 2-3/4 3 Finish: Plain (PLN) NUMBER: MPAPS S-B-30.101-GS/PL TITLE: Weld Studs REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate
15、Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 3 of 6 12.0 TYPE U3 PROJECTION WELD STUDS: THREE PROJECTIONS UNDER THE HEAD Dimensions in inches: Nominal Size or Basic Stud Diameter A H P F C T R Head Diameter Head Height Projection D
16、iameter Projection Height Locating Circle Radius on Edge of Head Fillet Radius Max Min Max Min Max Min Max Min Dia Ref Max Max 8 .1640 .385 .365 .068 .058 .075 .065 .027 .023 .268 .035 .025 10 .1900 .448 .428 .068 .058 .085 .075 .032 .028 .312 .040 .030 1/4 .2500 .575 .550 .083 .073 .105 .095 .042 .
17、038 .406 .050 .040 5/16 .3125 .755 .725 .099 .089 .125 .115 .047 .043 .531 .055 .045 3/8 .3750 .880 .850 .114 .104 .135 .125 .052 .048 .625 .065 .050 1/2 .5000 1.005 .975 .146 .136 .155 .145 .062 .058 .750 .085 .060 12.1 Part List: 12.1.1 Approved: Nominal Size-TPI Length Finish Material Part Number
18、 10 -24 1/2 PLN STL 21754R1 10 -24 3/4 PLN STL 220845 1/4 -20 1/2 PLN STL 220848 1/4 -20 2 PLN STL 40443R1 5/16 -18 3/4 PLN STL 218343 5/16 -18 1-1/2 PLN STL 19721R1 5/16 -18 1-3/4 PLN STL 3019533R1 5/16 -18 2 PLN STL 28115R1 3/8 -16 3/4 PLN STL 223260 3/8 -16 1-1/2 PLN STL 19672R1 3/8 -16 1-3/4 PLN
19、 STL 19765R1 NUMBER: MPAPS S-B-30.101-GS/PL TITLE: Weld Studs 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 Navistar, Inc. JUNE
20、2015 Page 4 of 6 12.1.2 Not for New Design: Nominal Size-TPI Length Finish Material Part Number 10 -24 1 PLN STL 27700R1 1/4 -20 5/8 PLN STL 220849 1/4 -20 3/4 PLN STL 220850 1/4 -20 1 PLN STL 20493R1 1/4 -20 1- 1/4 PLN STL 18459R1 1/4 -20 1-1/2 PLN STL 16701R1 1/4 -20 1-3/4 PLN STL 23593R1 5/16 -18
21、 7/8 PLN STL 25139R1 5/16 -18 1 PLN STL 220855 5/16 -18 1-1/4 PLN STL 220862 3/8 -16 5/8 PLN STL 223259 3/8 -16 7/8 PLN STL 21896R1 3/8 -16 1 PLN STL 223261 3/8 -16 1-1/4 PLN STL 223262 1/2 -13 1 PLN STL 223265 1/2 -13 1-1/4 PLN STL 223266 1/2 -13 1-3/4 ZN6A STL 40027R1 1/2 -13 2 PLN STL 20309R1 1/4
22、 -20 3/4 ZN6A STL 28000R1 5/16-18 1 ZN6A STL 21569R1 13.0 TYPE T3 PROJECTION WELD STUDS: THREE PROJECTIONS ON TOP OF THE HEAD NOT RECOMMENDED FOR NEW DESIGN NOT RECOMMENDED FOR NEW DESIGN NUMBER: MPAPS S-B-30.101-GS/PL TITLE: Weld Studs REVISION: 1506 This document is restricted and may not be sent
23、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 5 of 6 Dimensions in inches Nominal Size or Basic Stud Diameter A H P F C T R Head Diameter Head Height Projection
24、Diameter Projection Height Locating Circle Radius on Edge of Head Fillet Radius Max Min Max Min Max Min Max Min Dia Ref Max Max 6 .1380 .260 .240 .046 .036 .055 .045 .022 .018 .156 .025 .020 8 .1640 .323 .303 .052 .042 .075 .065 .027 .023 .203 .035 .025 10 .1900 .385 .365 .068 .058 .085 .075 .032 .0
25、28 .250 .040 .030 1/4 .2500 .510 .485 .083 .073 .105 .095 .042 .038 .312 .050 .040 5/16 .3125 .630 .605 .099 .089 .125 .115 .047 .043 .390 .055 .045 3/8 .3750 .755 .725 .114 .104 .135 .125 .052 .048 .485 .065 .050 1/2 .5000 1.005 .975 .146 .136 .155 .145 .062 .058 .660 .085 .060 13.1 Part List: 13.1
26、.1 Not for New Design: Nominal Size-TPI Length Head Type Finish Material Part Number 1/4 20 5/8 T3 PLN STL 221767 3/8 - 16 1 T3 PLN STL 40449R1 14.0 SPADE SPOT WELD STUDS: Dimensions in inches: Nominal Size or Basic Stud Diameter A H D Head Width Head Height Head Length Ref Max Min Max Min 6 .1380 .
27、229 .209 .052 .042 .562 8 .1640 .260 .240 .067 .057 .625 10 .1900 .354 .334 .067 .057 .688 1/4 .2500 .385 .365 .099 .089 .750 5/16 .3125 .448 .428 .130 .120 .875 3/8 .3750 .541 .521 .161 .151 1.000 NOT RECOMMENDED FOR NEW DESIGN NOT RECOMMENDED FOR NEW DESIGN NUMBER: MPAPS S-B-30.101-GS/PL TITLE: We
28、ld Studs 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 Navistar, Inc. JUNE 2015 Page 6 of 6 14.1 Part List: 14.1.1 Not for New D
29、esign: Nominal Size-TPI Length Head Type Finish Material Part Number 1/4-20 5/8 SPADE PLN STL 19813R1 1/4-20 1-1/4 SPADE PLN STL 19818R1 5/16-18 3/4 SPADE PLN STL 19882R1 15.0 TECHNICAL INFORMATION: For further information related to the technical content of this specification, contact: Suppliers ma
30、y 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:/
