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- F-16.101-GS/PL Former Designation: ESP-F-16.101-GS TITLE: Hardened Washers English Series (Noun Code 9720) CURRENT REV No.: 1506 DATE: June 2015 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: ESP-F-16.101-GS - August 2006 PRINTED COPIE
3、S 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 and health pr
4、actices and to determine the applicability of regulatory limits prior to use. Change Notice: Changed to New MPAPS format; Combined GS, PP, NPP. 1.0 GENERAL: The product covered by this standard is normally referred to as “thru hardened“ washers as contrasted to the case hardened variety. It has been
5、 determined by divisional survey that the range of sizes and thicknesses included should cover most company requirements. Type A conforms essentially with ANSI Type A (Narrow) latest designation. Type B is thicker than Type A throughout all sizes and conforms in ID and OD to ANSI Type A (Narrow). Ty
6、pe C is thicker than Type B throughout all sizes and conforms in ID and OD to ANSI B 18.22.1. Type A (Narrow) from sizes 1/4 to 7/16, and to ASTM 325 (Structural Steel Washers) from sizes 1/2 to 2 inches. In all sizes shown, Type D is the same as Type C with the exception that the OD is proportional
7、ly larger throughout all sizes. Dimensions are shown in decimal inch except for nominal shaft size where the industry practice of using fractional sizes is followed. These washers are intended for use in high clamping loads, to minimize embedding, and to aid torquing. Usage limitations for each wash
8、er type are shown in the following table: Washer Type Maximum Oversized Hole To Be Used With Maximum Oversize in Width of Slot To Be Used With A Thru .062 Not To Be Used Over Slots B Over .062 thru .156 Thru .062 C Over .062 thru .156 Thru .062 D Over .156 Over .062 NUMBER: MPAPS S-F-16.101-GS/PL TI
9、TLE: Hardened Washers 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 2 of 6 2.0 CONTENTS: 3.0 MISCE
10、LLANEOUS DIMENSIONS: The inside and outside diameters will be concentric within a total indicator reading equivalent to the tolerance permitted on the inside diameter. The tabulated inside dimensions and tolerances apply only to the smallest hole size and not to the tapered breakout area. The tapere
11、d breakout area and permissible breakout tolerance will be as shown: All washers will be flat within a total indicator reading of: .010 thru 1.75 OD .015 over 1.75 OD thru 2.50 OD .020 over 2.50 OD 4.0 MATERIAL: Steel, 1040 to 1065 per MPAPS A-0, Part 1, quenched and tempered to Rc 36 to 42. 5.0 FIN
12、ISHES: Washers will be furnished plain, plated or coated in accordance with the MPAPS and class listed below: Zinc Trivalent (ZN6A) MPAPS G-20, Class 6A. Phosphate Coating (PHC) MPAPS G-1, Class B2. The determinant of plating thickness will be the thickness of plating on the flat surface of the wash
13、er approximately midway between the inside and outside diameters. Plated washers are subject to hydrogen embrittlement, and will be suitably treated or baked in such a manner as to obviate such embrittlement. 6.0 RESTRICTED CHEMICAL SUBSTANCES: Effective January 1, 2007, all product supplied to the
14、requirements of this specification must comply with the requirements of the MPAPS B-50 specification. 7.0 POLICY FOR SELECTING PARTS FOR NEW DESIGN: Approved parts are so designated to reduce variety of parts and assure maximum availability, interchangeability and cost savings in volume buying. Page
15、 General 1 Miscellaneous Dimensions 2 Material 2 Finishes 2 Restricted Chemical Substances 2 Policy for Selecting Parts for New Design 2 Workmanship 3 Hardened Washers Types 3 Part List 5 Technical Information 6 NUMBER: MPAPS S-F-16.101-GS/PL TITLE: Hardened Washers REVISION: 1506 This document is r
16、estricted 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 3 of 6 For new design, parts shall be selected from “Approved“ part list only. Nomina
17、l Sizes: 1/4, 5/16, 3/8, 1/2, 5/8, 3/4, 1, 1-1/4, 1-1/2, 1-3/4, and 2 Types: A, B, C, and D Finishes: Zinc Trivalent (ZN6A) and Phosphate Coating (PHC) 8.0 WORKMANSHIP: Washers must be free from burrs, sharp edges, loose scale, and all other defects that might affect their serviceability. 9.0 HARDEN
18、ED WASHERS TYPES: 9.1 Type A and B: Dimensions in inches: Nominal Shaft Size A B C Inside Outside Diameter Diameter Thickness Basic Max Min .020 Basic Max Min 1/4 .281 .296 .276 .625 .065 .080 .051 5/16 .344 .359 .339 .688 .065 .080 .051 3/8 .406 .421 .401 .812 .065 .080 .051 * 7/16 .469 .484 .464 .
19、922 .065 .080 .051 1/2 .531 .546 .526 1.062 .095 .121 .074 * 9/16 .594 .609 .589 1.188 .095 .121 .074 5/8 .656 .686 .649 1.312 .095 .121 .074 3/4 .812 .842 .805 1.500 .134 .160 .108 * 7/8 .938 .968 .931 1.750 .134 .160 .108 1 1.062 1.092 1.055 2.000 .134 .160 .108 * 1 - 1/8 1.188 1.203 1.178 2.250 .
20、134 .160 .108 1 - 1/4 1.312 1.328 1.303 2.500 .150 .177 .122 * 1 - 3/8 1.438 1.453 1.428 2.750 .150 .177 .122 1 - 1/2 1.562 1.590 1.553 3.000 .150 .177 .122 TYPE B 1/4 .281 .296 .276 .625 .075 .085 .065 5/16 .344 .359 .339 .688 .089 .099 .079 3/8 .406 .421 .401 .812 .089 .099 .079 * 7/16 .469 .484 .
21、464 .922 .105 .115 .095 1/2 .531 .546 .526 1.062 .134 .146 .122 * 9/16 .594 .609 .589 1.188 .134 .146 .122 5/8 .656 .686 .649 1.312 .150 .162 .138 3/4 .812 .842 .805 1.500 .179 .191 .168 * 7/8 .938 .968 .931 1.750 .179 .191 .168 1 1.062 1.092 1.055 2.000 .209 .224 .184 * 1 - 1/8 1.188 1.203 1.178 2.
22、250 .209 .224 .184 * Non-preferred Sizes TYPE A NUMBER: MPAPS S-F-16.101-GS/PL TITLE: Hardened Washers 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 paten
23、t liability. 2015 by Navistar, Inc. JUNE 2015 Page 4 of 6 9.2 Type C and D: Dimensions in inches: TYPE C Nominal Shaft Size A B C Inside Outside Diameter Diameter Thickness Basic Max Min .020 Basic Max Min 1/4 .281 .296 .276 .625 .098 .122 .074 5/16 .344 .359 .339 .688 .098 .122 .074 3/8 .406 .421 .
24、401 .812 .134 .160 .108 * 7/16 .469 .484 .464 .922 .134 .160 .108 1/2 .531 .546 .526 1.062 .188 .199 .177 * 9/16 .594 .609 .589 1.188 .188 .199 .177 5/8 .656 .686 .649 1.312 .188 .199 .177 3/4 .812 .842 .805 1.500 .219 .233 .205 * 7/8 .938 .968 .931 1.750 .219 .233 .205 1 1.062 1.092 1.055 2.000 .21
25、9 .233 .205 * 1 - 1/8 1.250 1.265 1.240 2.250 .250 .270 .230 1 - 1/4 1.375 1.390 1.365 2.500 .250 .270 .230 * 1 - 3/8 1.500 1.517 1.490 2.750 .250 .270 .230 1 - 1/2 1.625 1.642 1.615 3.000 .250 .270 .230 1 - 3/4 1.875 1.892 1.865 3.375 .312 .332 .292 2 2.125 2.142 2.115 3.750 .312 .332 .292 TYPE D 1
26、/4 .281 .296 .276 .875 .098 .122 .074 5/16 .344 .359 .339 1.000 .098 .122 .074 3/8 .406 .421 .401 1.125 .134 .160 .108 * 7/16 .469 .484 .464 1.250 .134 .160 .108 1/2 .531 .546 .526 1.250 .188 .199 .177 * 9/16 .594 .609 .589 1.312 .188 .199 .177 5/8 .656 .686 .649 1.500 .188 .199 .177 3/4 .812 .842 .
27、805 1.750 .219 .233 .205 * 7/8 .938 .968 .931 2.250 .219 .233 .205 1 1.062 1.092 1.055 2.500 .219 .233 .205 * 1 - 1/8 1.250 1.265 1.240 2.750 .250 .270 .230 1 1/4 1.375 1.390 1.365 3.000 .250 .270 .230 * 1 - 3/8 1.500 1.517 1.490 3.250 .250 .270 .230 1 - 1/2 1.625 1.642 1.615 3.500 .250 .270 .230 1
28、 3/4 1.875 1.892 1.865 4.000 .312 .332 .292 2 2.125 2.142 2.115 4.500 .312 .332 .292 * Non-preferred Sizes TYPE C NUMBER: MPAPS S-F-16.101-GS/PL TITLE: Hardened Washers REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corpor
29、ate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 5 of 6 10.0 PART LIST: 10.1 Approved: Nominal Size Nominal Inside Diameter Outside Diameter Nominal Thickness Washer Type Finish Part Number 1/4 .281 .625 .065 A PHC 25532R1 1/4 .281
30、 .625 .075 B ZN6A 25707R1 1/4 .281 .625 .075 B PHC 27616R1 1/4 .281 .625 .098 C PHC 25542R1 1/4 .281 .875 .098 D PHC 25551R1 5/16 .344 .688 .065 A PHC 25533R1 5/16 .344 .688 .089 B ZN6A 25708R1 5/16 .344 .688 .089 B PHC 27326R1 5/16 .344 .688 .098 C PHC 25543R1 5/16 .344 1.000 .098 D PHC 25552R1 3/8
31、 .406 .812 .065 A PHC 25534R1 3/8 .406 .812 .089 B ZN6A 25709R1 3/8 .406 .812 .089 B PHC 25896R1 3/8 .406 .812 .134 C PHC 25544R1 3/8 .406 .812 .134 C ZN6A 28422R1 3/8 .406 1.125 .134 D ZN6A 25724R1 3/8 .406 1.125 .134 D PHC 25553R1 1/2 .531 1.062 .095 A ZN6A 390307C1 1/2 .531 1.062 .095 A PHC 25536
32、R1 1/2 .531 1.062 .134 B ZN6A 25710R1 1/2 .531 1.062 .188 C ZN6A 25645R1 1/2 .531 1.062 .188 C PHC 25546R1 1/2 .531 1.250 .188 D ZN6A 28423R1 1/2 .531 1.250 .188 D PHC 25555R1 5/8 .656 1.312 .095 A PHC 25537R1 5/8 .656 1.312 .150 B ZN6A 25711R1 5/8 .656 1.312 .150 B PHC 25976R1 5/8 .656 1.312 .188 C
33、 PHC 25547R1 5/8 .656 1.500 .188 D PHC 25556R1 5/8 .656 1.500 .188 D ZN6A 28425R1 3/4 .812 1.500 .134 A PHC 25538R1 3/4 .812 1.500 .179 B ZN6A 25712R1 3/4 .812 1.500 .219 C PHC 25548R1 3/4 .812 1.500 .219 C ZN6A 28426R1 3/4 .812 1.750 .219 D ZN6A 117779C1 1 1.062 2.000 .134 A ZN6A 390312C1 1 1.062 2
34、000 .134 A PHC 25540R1 1 1.062 2.000 .209 B ZN6A 25847R1 1 1.062 2.000 .219 C PHC 25550R1 7/16 .469 .922 .065 A ZN6A 390306C1 7/16 .469 .922 .105 B ZN6A 25846R1 7/16 .469 .922 .134 C PHC 25545R1 7/16 .469 1.250 .134 D PHC 25554R1 9/16 .594 1.188 .095 A PHC 26054R1 9/16 .594 1.188 .134 B PHC 27516R1
35、 9/16 .594 1.188 .188 C PHC 26610R1 7/8 .938 1.750 .179 B ZN6A 26070R1 7/8 .938 1.750 .219 C PHC 25549R1 7/8 .938 2.250 .219 D PHC 27914R1 1 1/8 1.188 2.250 .134 A PHC 26297R1 NUMBER: MPAPS S-F-16.101-GS/PL TITLE: Hardened Washers REVISION: 1506 This document is restricted and may not be sent outsid
36、e 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 10.2 Not for New Design: Nominal Size Nominal Inside Diameter Outside Diameter Nominal Thickness Washer Type Finis
37、h Part Number 5/8 .656 1.312 .095 A ZN6A 390309C1 3/4 .812 1.500 .179 B PHC 26068R1 11.0 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:/
