NAVISTAR MPAPS S-EM-74 101-GS PL-2015 Wing Nuts CMetric Series (Noun Code 5780).pdf
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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 3 NAVISTAR, INC. Material, Parts, and Process Specifications (
2、MPAPS) NUMBER: MPAPS S-EM-74.101-GS/PL Former Designation: ESP-EM-74.101-GS TITLE: Wing NutsMetric Series (Noun Code 5780) CURRENT REV No.: 1506 DATE: June 2015 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: ESP-EM-74.101-GS - August 2006 PRINTED COPIES OF TH
3、IS 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 practices
4、 and to determine the applicability of regulatory limits prior to use. Change Notice: Changed to New MPAPS format; Combined GS, PP. 1.0 GENERAL: This specification contains the essentials of the following standards: International Organization for Standardization: R68, R262, 898/II, and DR965/II Fren
5、ch Standardization Association: NFE 27-454 German Institute of Standardization: DIN 315 General information for metric nuts in MPAPS S-EM-1.101-GS/PL also applies, essentially, to this standard. Inch series wing nuts may be found in MPAPS S-E-74.101-GS/PL. 2.0 POLICY FOR SELECTING PARTS FOR NEW DESI
6、GN: Approved parts are so designated to reduce variety of parts and assure maximum availability, interchangeability and cost savings. For new design, parts shall be selected from “Approved“ part list only. Nominal Sizes: M6, M8, M10, and M12 Material: Steel, Class 5 Finish: Zinc Trivalent, Class 6A
7、(ZN6A) 3.0 SQUARENESS: The axis of the thread of the nut will be square to the face of the nut within 2 degrees. 4.0 CHAMFER: Wing nuts will be countersunk on the bearing face at an included angle of 90 to 120 degrees slightly to exceed the major diameter of the thread by an amount sufficient to eli
8、minate encroachment of the thread on the bearing surface. 5.0 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 S
9、crew Threads. 6.0 MATERIAL: Steel, Class 5, per MPAPS F-31, Part II. Nuts may be produced by cold forging or hot forming. NUMBER: MPAPS S-EM-74.101-GS/PL TITLE: Wing Nuts REVISION: 1506 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corpo
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