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-E-69.101-GS/PL Former Designation: ESP-E-69.101-GS TITLE: Push on Spring Nuts English Series (Noun Code 5780) CURRENT REV No.: 1506 DATE: June 2015 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: ESP-E-69.101-GS - August 2006 PRINTED COP
3、IES 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
4、practices and to determine the applicability of regulatory limits prior to use. Change Notice: Changed to New MPAPS format; Combined GS, PP. 1.0 GENERAL: Push on spring nuts (Stud Receivers) have a “Boss“ or impression that allows the fastener to be forced down on a stud and lock in place. Back pres
5、sure against the fastener causes the prongs to bite into the stud. 2.0 APPLICATION AND DESIGN: All nuts in section 10.0 may be used on either round or “D“ shaped studs, except the heavy series nuts having the boss design variation. These nuts are used on round studs only. Nuts are used on round stud
6、s in applications where the assembly is permanent; “D“ shaped studs where disassembly is a consideration. Recommended stud design data is specified at the following page. 3.0 DIMENSIONAL TOLERANCE: Tolerance on dimensions in the tables will be plus or minus .010 inch unless otherwise specified. Tole
7、rance on the thickness of material will be plus or minus .001 inch. 4.0 BOSS: Size and formation of boss and other detail will be such as to assemble readily and function satisfactorily with the specified stud. 5.0 MATERIAL: Spring steel, 1050 thru 1065 per MPAPS A-0, Part I, suitably processed to m
8、eet the performance requirements of the specification. 6.0 FINISH: Two standard finishes “Phosphate Coated“, and “Rustproof.“ “Phosphate Coating“ will comply with Class B-2 per MPAPS G-1, which requires phosphate coating with subsequent oil coating to meet a 48 hour salt spray requirement. “Rustproo
9、f“ requires phosphate coating, with two subsequent coats of hex-free zinc chromate paint requirements (or paint standard with manufacturer) to meet 72 hour salt spray requirement 7.0 RESTRICTED CHEMICAL SUBSTANCES: Effective January 1, 2007, all product supplied to the requirements of this specifica
10、tion must comply with the requirements of the MPAPS B-50 specification. NUMBER: MPAPS S-E-69.101-GS/PL TITLE: Push on Spring 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 r
11、equired to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 2 of 3 8.0 HARDNESS: Material Thickness Rockwell Scale Dial Reading Conversion to Rockwell C Scale Up to .016 15N 82.5 - 85.5 44 - 50 .017-.024 30N 63.0 - 68.5 44 - 50 9.0 SURFACE DISCONTINUITIES: Allowable limits defined
12、in MPAPS F-31, Part II. RECOMMENDED STUD DESIGN DATA Dimensions in inches C D L T Stud Diameter .005 Stud Width Exposed Stud Length Maximum Taper 1 /16 .049 3 /16 .052 3/32 .074 3 /16 .052 1 /8 .100 3 /16 .052 5 /32 .125 1 /4 .040 3 /16 .150 1 /4 .040 7 /32 .175 1 /4 .040 1 /4 .200 1 /4 .040 5 /16 .
13、250 5 /16 .033 3 /8 .300 5 /16 .033 10.0 PART LIST: 10.1 Approved: Stud Diameter Style Series D E C F PART NUMBERS Length Width Arch Thick- ness STEEL Phosphate Coated Rustproof Max Min 3/16 I Medium 5/8 3/8 .060 .030 .017 - 445207 1/4 I Medium 5/8 7/16 .050 .020 .017 - 445213 NUMBER: MPAPS S-E-69.1
14、01-GS/PL TITLE: Push on Spring 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 Navistar, Inc. JUNE 2015 Page 3 of 3 11.0 TECH
15、NICAL 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:/
