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 2 NAVISTAR, INC. Material, Parts, and Process Specifications (
2、MPAPS) NUMBER: MPAPS S-E-42.101-GS/PL Former Designation: ESP-E-42.101-GS TITLE: Tapping Bosses English Series (Noun Code 0865) CURRENT REV No.: 1506 DATE: June 2015 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: ESP-E-42.101-GS - September 2007 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. 1.0 GENERAL: This standard consists of weldable round and rectangular parts containing a single through tapped hole. The following design parameters must be adhe
5、red to: Rectangular Parts - F dimensions must be on center line. Length (L) must not exceed five times width (W). Round Parts - Thickness (L) must not exceed 2 times outside diameter (D) . Threads - Coarse Only Nominal Thread Sizes - 1/4, 5/16, 3/8, 1/2, 5/8, 3/4, and 1 inch. Length (L), Width (W),
6、and Diameter (D) - 1/4 inch increments only Thickness (T) - 1/8 inch increments only Center of Drilled Hole (E) - 1/16 inch increments only * Mill Tolerance - 0-202W, MPAPS A-0, Part II, use AISI hot rolled bar tolerance, or 2-202W, MPAPS A-0, Part II, use cold drawn bar tolerance. * Drilled Hole to
7、 be located a distance of nominal L minus E. NUMBER: MPAPS S-E-42.101-GS/PL TITLE: Tapping Bosses 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 lia
8、bility. 2015 by Navistar, Inc. JUNE 2015 Page 2 of 2 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 EDGES: A breakout of 15% thickness permissible wit
9、h sheared edges. 4.0 TOLERANCES: (Round Parts) Diameter (D) must be concentric with the axis of threaded hole within .04. Both ends (L) dimension must be square with the axis of threaded hole within .016. 5.0 THREADS: Unified Series, Class 2B. 6.0 MATERIAL: As designated by part number, Code 0-202W
10、or 2-202W steel per MPAPS A-0, Part II. 7.0 FINISH: Plain (PLN). 8.0 DESIGN GUIDANCE DATA: Where Type 5 torques are required, the following chart indicates minimum thickness required. Nominal Size T Min 1 /4 .375 5 /16 .500 3 /8 .625 1 /2 .750 5/8 1.000 3/4 1.250 1 1.500 9.0 DEFECTS: Bosses must be
11、free from all defects which might affect their serviceability. 10.0 PART LIST - TAPPING BOSSES ROUNDED: 10.1 Approved: Nominal Size -TPI L Length D O.D. Material Part Number 3/8 -16 .62 1.00 0-202W 612866C1 11.0 TECHNICAL INFORMATION: For further information related to the technical content of this
12、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:/
